guojianz/MolReasoner huggingface dataset:
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C@][C][C][C@@H1][Branch1][C][O][C][C@H1][Ring1][#Branch1][C][C][C@@H1][C@@H1][Ring1][O][C][C@@H1][Branch1][C][O][C@][Branch1][C][C][C@@H1][Branch1][O][C][=C][C][=Branch1][C][=O][O][C][Ring1][=Branch1][C][C][C@][Ring1][P][Ring1][N][O]

The molecule is a hydroxy steroid that consists of 5beta-cardanolide having a double bond at the 20(22)-position as well as hydroxy groups at the 3alpha,- 12beta- and 14beta-positions. It is a 12beta-hydroxy steroid, a 14beta-hydroxy steroid and a 3alpha-hydroxy steroid. It derives from a hydride of a 5beta-cardanolide.

SMILES: CC12CCC(O)CC1CCC1C2CC(O)C2(C)C(C3=CC(=O)OC3)CCC12O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][O][C][=C][C][Branch1][C][O][=C][C][=Branch1][C][=O][C][Branch1][C][O][=C][Branch1][N][C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][O][C][Ring1][#C][=C][Ring2][Ring1][Ring2]

The molecule is a monomethoxyflavone that is the 7-methyl ether derivative of kaempferol. It has a role as a plant metabolite. It is a trihydroxyflavone, a member of flavonols and a monomethoxyflavone. It derives from a kaempferol.

SMILES: COc1cc(O)c2c(=O)c(O)c(-c3ccc(O)cc3)oc2c1
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C@H1][Branch2][#Branch1][#Branch1][C][=Branch1][C][=O][S][C][C][N][C][=Branch1][C][=O][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][C][O][C][Branch1][C][C][Branch1][C][C][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][C@H1][C][C][C@H1][C@@H1][C][C][C][=C][C][=Branch1][C][=O][C][C][C@][Ring1][#Branch1][Branch1][C][C][C@H1][Ring1][N][C][C][C@][Ring2][Ring1][Ring1][Ring1][S][C]

The molecule is an acyl-CoA oxoanion resulting from the removal of all four protons from the phosphate and diphosphate groups of 3-oxo-23,24-bisnor-chol-4-en-22-oyl-CoA; major species at pH 7.3. It is a conjugate base of a 3-oxo-23,24-bisnorchol-4-en-22-oyl-CoA.

SMILES: CC(C(=O)SCCNC(=O)CCNC(=O)C(O)C(C)(C)COP(=O)([O-])OP(=O)([O-])OCC1OC(n2cnc3c(N)ncnc32)C(O)C1OP(=O)([O-])[O-])C1CCC2C3CCC4=CC(=O)CCC4(C)C3CCC12C
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O]

The molecule is a fatty acyl-AMP(1-) obtained by deprotonation of the phosphate OH group of dodecanoyl-AMP; the major species at pH 7.3. It is a fatty acyl-AMP(1-) and a saturated fatty acyl-AMP(1-). It is a conjugate base of a dodecanoyl-AMP.

SMILES: CCCCCCCCCCCC(=O)OP(=O)([O-])OCC1OC(n2cnc3c(N)ncnc32)C(O)C1O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][O][C@H1][/C][=C][/O][C@@][Branch1][C][C][O][C][=C][Branch1][C][C][C][Branch1][C][O][=C][C][Branch1][C][O][=C][Branch2][Ring1][#C][C][=C][Branch1][#C][N][=C][C][=C][Branch1][C][C][C][=C][N][Ring1][#Branch1][Ring1][#Branch2][C][Ring1][#C][=C][Ring2][Ring1][Branch1][C][Ring2][Ring1][=Branch2][=O][N][C][=Branch1][C][=O][/C][Branch1][C][C][=C][\C][=C][\C@H1][Branch1][C][C][C@H1][Branch1][C][O][C@@H1][Branch1][C][C][C@@H1][Branch1][C][O][C@@H1][Branch1][C][C][C@H1][Branch1][#Branch1][O][C][Branch1][C][C][=O][C@@H1][Ring2][Branch1][=Branch1][C]

The molecule is a semisynthetic member of the class of rifamycins and non-systemic gastrointestinal site-specific broad spectrum antibiotic. Used in the treatment of traveller's diarrhoea, hepatic encephalopathy and irritable bowel syndrome. It has a role as a gastrointestinal drug, an orphan drug and an antimicrobial agent. It is a member of rifamycins, an acetate ester, a lactam, an organic heterohexacyclic compound, a macrocycle, a semisynthetic derivative and a cyclic ketal.

SMILES: COC1C=COC2(C)Oc3c(C)c(O)c4c(O)c(c5c(nc6cc(C)ccn65)c4c3C2=O)NC(=O)C(C)=CC=CC(C)C(O)C(C)C(O)C(C)C(OC(C)=O)C1C
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][O][C][=C][C][Branch1][Ring1][O][C][=C][C][=Branch1][C][=O][C][Branch1][C][O][=C][Branch1][P][C][=C][C][=C][Branch1][Ring1][O][C][C][Branch1][Ring1][O][C][=C][Ring1][#Branch2][O][C][Ring2][Ring1][C][=C][Ring2][Ring1][Branch2]

The molecule is a tetramethoxyflavone that is the 5,7,3',4'-tetramethy-derivative of quercetin. It has a role as a plant metabolite. It is a tetramethoxyflavone and a member of flavonols. It derives from a quercetin.

SMILES: COc1cc(OC)c2c(=O)c(O)c(-c3ccc(OC)c(OC)c3)oc2c1
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[N][C][=Branch1][C][=O][O][C@@H1][C@@H1][Branch1][C][O][C@@H1][Branch2][Ring2][=Branch2][N][C][=Branch1][C][=O][C][C@@H1][Branch1][C][NH3+1][C][C][C][N][C][=Branch1][C][=O][C][C@@H1][Branch1][C][NH3+1][C][C][C][N][C][=Branch1][C][=O][C][C@@H1][Branch1][C][NH3+1][C][C][C][NH3+1][C@H1][Branch2][Ring1][Branch2][N][C][=NH1+1][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C@@H1][Branch1][#Branch1][C@H1][Branch1][C][O][C][NH3+1][N][Ring1][N][O][C@@H1][Ring2][Ring2][S][C][O]

The molecule is a primary aliphatic ammonium ion which is obtained from streptothricin D by protonation of the guanidino and amino groups and deprotonation of the carboxylic acid group. It is a primary aliphatic ammonium ion, a monocarboxylic acid anion and a guanidinium ion. It is a conjugate acid of a streptothricin D acid.

SMILES: NC(=O)OC1C(CO)OC(NC2=[NH+]C(C(=O)[O-])C(C(O)C[NH3+])N2)C(NC(=O)CC([NH3+])CCCNC(=O)CC([NH3+])CCCNC(=O)CC([NH3+])CCC[NH3+])C1O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C][C][C][C][/C][=C][\C][/C][=C][\C][/C][=C][\C][/C][=C][\C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C@@H1][Branch1][C][O][C][C][=Branch1][C][=O][S][C][C][N][C][=Branch1][C][=O][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][C][O][C][Branch1][C][C][Branch1][C][C][C][O][P][=Branch1][C][=O][Branch1][C][O][O][P][=Branch1][C][=O][Branch1][C][O][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O][P][=Branch1][C][=O][Branch1][C][O][O]

The molecule is a 3-hydroxy fatty acyl-CoA that results from the formal condensation of the thiol group of coenzyme A with the carboxy group of (3R,19Z,22Z,25Z,28Z)-3-hydroxytetratriacontatetraenoic acid. It is a (R)-3-hydroxyacyl-CoA, a 3-hydroxy fatty acyl-CoA, an unsaturated fatty acyl-CoA and an ultra-long-chain fatty acyl-CoA. It is a conjugate acid of a (3R,19Z,22Z,25Z,28Z)-3-hydroxytetratriacontatetraenoyl-CoA(4-).

SMILES: CCCCCC=CCC=CCC=CCC=CCCCCCCCCCCCCCCCC(O)CC(=O)SCCNC(=O)CCNC(=O)C(O)C(C)(C)COP(=O)(O)OP(=O)(O)OCC1OC(n2cnc3c(N)ncnc32)C(O)C1OP(=O)(O)O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][O][C][=C][C][=C][Branch1][N][S][C][C][C][=C][C][=N][C][=C][Ring1][=Branch1][C][=C][Ring1][#C]

The molecule is a member of the class of pyridines that is 2-(pyridin-4-yl)ethane-1-thiol in which the thiol hydrogen is replaced by a 4-methoxyphenyl group. It has a role as a VEGF activator. It is a member of pyridines, a monomethoxybenzene and an aryl sulfide. It is a conjugate base of a GS4012 free base(1+).

SMILES: COc1ccc(SCCc2ccncc2)cc1
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[O][=C][O-1].[Na+1]

The molecule is an organic sodium salt which is the monosodium salt of formic acid. It has a role as a buffer and an astringent. It contains a formate.

SMILES: O=C[O-].[Na+]
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C][Branch1][C][C][Branch2][Branch1][=Branch2][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][C@@H1][Branch1][C][O][C][=Branch1][C][=O][N][C][C][C][=Branch1][C][=O][N][C][C][S][C][=Branch1][C][=O][C@H1][Branch1][C][O][C][C][C][=Branch1][C][=O][O-1]

The molecule is a 2-hydroxyglutaryl-CoA(5-) that results from the removal of all five protons from the phosphate and carboxylic acid groups of (R)-2-hydroxyglutaryl-CoA; major species at pH 7.3. It is a conjugate base of a (R)-2-hydroxyglutaryl-CoA.

SMILES: CC(C)(COP(=O)([O-])OP(=O)([O-])OCC1OC(n2cnc3c(N)ncnc32)C(O)C1OP(=O)([O-])[O-])C(O)C(=O)NCCC(=O)NCCSC(=O)C(O)CCC(=O)[O-]
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C][=Branch1][C][=O][N][C@@H1][Branch1][S][C][C][C][=Branch1][C][=O][O][P][=Branch1][C][=O][Branch1][C][O][O][C][=Branch1][C][=O][O]

The molecule is a L-glutamic acid derivative. It has a role as an Escherichia coli metabolite. It derives from a L-gamma-glutamyl phosphate. It is a conjugate acid of a N-acetyl-L-gamma-glutamyl phosphate(3-).

SMILES: CC(=O)NC(CCC(=O)OP(=O)(O)O)C(=O)O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[O][=C][C][C@@][Branch1][C][O][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@@H1][Ring1][#C][O]

The molecule is an organophosphate oxoanion obtained by deprotonation of the phosphate OH groups of 2-epi-5-epi-valiolone 7-phosphate; major species at pH 7.3. It has a role as a bacterial metabolite. It is a conjugate base of a 2-epi-5-epi-valiolone 7-phosphate.

SMILES: O=C1CC(O)(COP(=O)([O-])[O-])C(O)C(O)C1O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[O][=C][Branch2][Ring2][Ring2][N][C][C@H1][C][N][Branch2][Ring1][Ring2][C][=C][C][=C][Branch1][#Branch2][N][C][C][O][C][C][Ring1][=Branch1][=O][C][=C][Ring1][=N][C][=Branch1][C][=O][O][Ring2][Ring1][Ring1][C][=C][C][=C][Branch1][C][Cl][S][Ring1][=Branch1]

The molecule is a monocarboxylic acid amide obtained by formal condensation of the carboxy group of 5-chlorothiophene-2-carboxylic acid with the amino group of 4-{4-[(5S)-5-(aminomethyl)-2-oxo-1,3-oxazolidin-3-yl]phenyl}morpholin-3-one. An anticoagulant used for prophylaxis of venous thromboembolism in patients with knee or hip replacement surgery. It has a role as an anticoagulant and an EC 3.4.21.6 (coagulation factor Xa) inhibitor. It is a member of thiophenes, an organochlorine compound, an oxazolidinone, a member of morpholines, a lactam, an aromatic amide and a monocarboxylic acid amide.

SMILES: O=C(NCC1CN(c2ccc(N3CCOCC3=O)cc2)C(=O)O1)c1ccc(Cl)s1
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[O][C][=C][C][Branch1][C][O][=C][C][=Branch1][Ring2][=C][Ring1][#Branch1][O][C@H1][Branch1][#C][C][=C][C][=C][Branch1][C][O][C][Branch1][C][O][=C][Ring1][Branch2][C][C][Ring1][#C][O]

The molecule is a leucoanthocyanidin that is the 3-deoxy derivative of (2R,3S,4S)-leucocyanidin. It is a pentahydroxyflavan and a leucoanthocyanidin. It derives from a (2R,3S,4S)-leucocyanidin.

SMILES: Oc1cc(O)c2c(c1)OC(c1ccc(O)c(O)c1)CC2O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][C][C][C][C][/C][=C][\C][C@@H1][Branch1][S][/C][=C][/C][=C][\C][C][C][C][C][C][C][=Branch1][C][=O][O-1][O][O]

The molecule is a polyunsaturated fatty acid anion that is the conjugate base of 12(S)-HPE(8,10,14)TrE, obtained by deprotonation of the carboxy group; major species at pH 7.3. It derives from an all-cis-icosa-8,11,14-trienoate. It is a conjugate base of a 12(S)-HPE(8,10,14)TrE.

SMILES: CCCCCC=CCC(C=CC=CCCCCCCC(=O)[O-])OO
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[C][O][C][=C][C][Branch1][=Branch1][S][Branch1][C][C][=O][=C][C][=C][Ring1][=Branch2][C][=N][C][=N][C][=C][C][=C][Ring1][=Branch1][NH1][Ring1][=Branch2]

The molecule is an imidazopyridine that is 1H-imidazo[4,5-b]pyridine which is substituted at position 2 by a 2-methoxy-4-(methylsulfinyl)phenyl group. An A1 adenosine receptor antagonist, it was formerly used as a cardiotonic agent. It has a role as a cardiotonic drug, an EC 3.1.4.* (phosphoric diester hydrolase) inhibitor and an adenosine A1 receptor antagonist. It is an imidazopyridine and a sulfoxide.

SMILES: COc1cc(S(C)=O)ccc1-c1nc2ncccc2[nH]1