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>

[N][=P][=Branch1][C][=N][N]

The molecule is a phosphorus molecular entity that is phosphine in which the hydrogens are substituted by two imino groups and an amino group. It is a phosphorus molecular entity and a nitrogen molecular entity.

SMILES: N=P(=N)N
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][Branch1][C][O][C][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][C][C][C][Ring1][#Branch1]

The molecule is a monocarboxylic acid that is 1,2,3,4-tetrahydronaphthalene which is substituted at position 6 by a carboxylic acid group. It is a member of tetralins and a monocarboxylic acid.

SMILES: O=C(O)c1ccc2c(c1)CCCC2
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][=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]

The molecule is an octadecatrienoyl-CoA(4-) arising from deprotonation of the phosphate and diphosphate functions of alpha-linolenoyl-CoA. It is a conjugate base of an alpha-linolenoyl-CoA.

SMILES: CCC=CCC=CCC=CCCCCCCCC(=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][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][O]

The molecule is a very long-chain primary fatty alcohol that is heptacosane in which one of the terminal methyl hydrogens has been replaced by a hydroxy group. It has a role as a plant metabolite, a marine metabolite and an algal metabolite.

SMILES: CCCCCCCCCCCCCCCCCCCCCCCCCCCO
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][C@@H1][Branch2][Ring1][Ring1][O][C][=Branch1][C][=O][/C][=C][/C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][C][C][C@][Branch1][C][C][C][=C][C][C@@][Branch1][C][C][C@@H1][C][C@][Branch1][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O][C][C][C@][Ring1][#Branch2][Branch1][C][C][C][C][C@][Ring1][S][Branch1][C][C][C][Ring2][Ring1][Branch1][=C][C][C@@H1][Ring2][Ring2][O][Ring2][Ring1][#Branch2]

The molecule is a pentacyclic triterpenoid that is the cinnamate ester obtained by the formal condensation of trans-4-coumaric acid with D:C-friedoolean-7,9(11)-dien-3beta-ol-29-oic acid. It is isolated from the stems of Lagenaria siceraria and exhibits cytotoxic activity against human hepatoma SK-Hep 1 cells. It has a role as a metabolite and an antineoplastic agent. It is a pentacyclic triterpenoid, a monocarboxylic acid and a cinnamate ester. It derives from a trans-4-coumaric acid and a D:C-friedoolean-7,9(11)-dien-3beta-ol-29-oic acid.

SMILES: CC1(C(=O)O)CCC2(C)CCC3(C)C4=CCC5C(C)(CCC(OC(=O)C=Cc6ccc(O)cc6)C5(C)C)C4=CCC3(C)C2C1
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][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][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][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O]

The molecule is the S-(3-oxoadipyl) derivative of coenzyme A. It has a role as an Escherichia coli metabolite and a mouse metabolite. It derives from a 3-oxoadipic acid. It is a conjugate acid of a 3-oxoadipyl-CoA(5-).

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)CC(=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][=Branch1][C][=Branch1][C][=O][O][C][C][Ring1][=Branch1][Branch1][C][C][C][=Branch1][C][=O][N][C][=C][C][Branch1][C][Cl][=C][C][Branch1][C][Cl][=C][Ring1][Branch2]

The molecule is a monocarboxylic acid that is cyclopropanecarboxylic acid substituted by methyl groups at positions 1 and 2 and a 3,5-dichlorophenylcarbamoyl group at position 2. It is an anilide, a dichlorobenzene, a member of cyclopropanes and a monocarboxylic acid. It derives from a cyclopropanecarboxylic acid.

SMILES: CC1(C(=O)O)CC1(C)C(=O)Nc1cc(Cl)cc(Cl)c1
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][C@H1][Branch2][=C][C][O][C@H1][C@H1][Branch2][=Branch1][#Branch2][O][C@H1][Branch1][C][C][C][=Branch1][C][=O][N][C@@H1][Branch1][C][C][C][=Branch1][C][=O][N][C@H1][Branch2][Ring2][=C][C][C][C][=Branch1][C][=O][N][C@@H1][Branch1][=N][C][C][C][C@@H1][Branch1][C][N][C][=Branch1][C][=O][O][C][=Branch1][C][=O][N][C@H1][Branch1][C][C][C][=Branch1][C][=O][N][C@H1][Branch1][C][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][C@@H1][Branch1][#Branch1][N][C][Branch1][C][C][=O][C@@H1][Branch2][#Branch1][#C][O][P][=Branch1][C][=O][Branch1][C][O][O][P][=Branch1][C][=O][Branch1][C][O][O][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][/C][C][C][/C][=C][Branch1][C][\C][C][C][/C][=C][Branch1][C][\C][C][C][C][=C][Branch1][C][C][C][O][C@@H1][Ring2][=Branch2][Ring2][C][O][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@@H1][Ring2][=Branch2][S][O]

The molecule is an undecaprenyldiphospho-N-acetylmuramoyl peptide in which the peptide element is L-alanyl-D-gamma-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine and in which the muramoyl residue is glucosaminyl-substituted at O-4. It has a role as an Escherichia coli metabolite and a mouse metabolite. It is a conjugate acid of an undecaprenyldiphospho-N-acetyl-(N-acetylglucosaminyl)muramoyl-L-alanyl-D-gamma-glutamyl-meso-2,6-diaminopimeloyl-D-alanyl-D-alanine(4-).

SMILES: CC(=O)NC1C(OC2C(CO)OC(OP(=O)(O)OP(=O)(O)OCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)CCC=C(C)C)C(NC(C)=O)C2OC(C)C(=O)NC(C)C(=O)NC(CCC(=O)NC(CCCC(N)C(=O)O)C(=O)NC(C)C(=O)NC(C)C(=O)O)C(=O)O)OC(CO)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][C@@H1][O][C@@H1][Branch2][Ring2][N][O][C][=C][Branch2][Ring1][C][C][=C][C][Branch1][C][O][=C][Branch1][C][O-1][C][Branch1][C][O][=C][Ring1][=Branch2][O][C][=C][C][Branch1][C][O][=C][C][Branch1][C][O-1][=C][Ring1][Branch2][C][Ring2][Ring1][Branch1][=O][C@H1][Branch2][Ring2][Branch2][O][C@@H1][O][C@H1][Branch2][Ring1][Ring2][C][O][C][=Branch1][C][=O][/C][=C][/C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Ring2][Ring1][Branch1][O][C@H1][Branch1][C][O][C@H1][Ring2][Branch1][Branch1][O]

The molecule is a flavonoid oxoanion resulting from the deprotonation of the hydroxy groups at positions 5 and 7 of the flavonoid ring of myricetin 3-O-[(6-O-trans-4-coumaroyl-beta-D-glucosyl)-(1->2)-alpha-L-rhamnoside]. Identified in Fig. S21 peak 2 of PMID:29967287. It is a conjugate base of a myricetin 3-O-[(6-O-trans-4-coumaroyl-beta-D-glucosyl)-(1->2)-alpha-L-rhamnoside].

SMILES: CC1OC(Oc2c(-c3cc(O)c([O-])c(O)c3)oc3cc(O)cc([O-])c3c2=O)C(OC2OC(COC(=O)C=Cc3ccc(O)cc3)C(O)C(O)C2O)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>

[N-1][=N+1][=N][C][C][C][N][C][=Branch1][C][=O][C][C][C][C][=Branch1][C][=O][O]

The molecule is an oxo monocarboxylic acid in which pentanoic acid is substituted at C-5 with an oxo group and a 3-azidopropylamino group. It is an oxo monocarboxylic acid, an azide and a secondary carboxamide.

SMILES: [N-]=[N+]=NCCCNC(=O)CCCC(=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][C][C@@H1][C][C][C][=C][C][C][C@@H1][Branch1][C][C][C@@][Ring1][#Branch1][Branch1][C][C][C][Ring1][N]

The molecule is a member of the class of octahydronahthalenes that is (-)-eremophilene in which the carbon bearing the methyl group at position 4 (i.e. the methyl group furthest from the isopropenyl group) has R configuration instead of S. It is a carbobicyclic compound, a sesquiterpene and a member of octahydronaphthalenes.

SMILES: C=C(C)C1CCC2=CCCC(C)C2(C)C1
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][O][C][C@@H1][Branch1][C][NH3+1][C][O]

The molecule is an organic cation obtained by protonation of the amino group of 1-hexadecyl-2-amino-2-deoxy-sn-glycerol; major species at pH 7.3. It is an organic cation and a primary ammonium ion.

SMILES: CCCCCCCCCCCCCCCCOCC([NH3+])CO
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][Branch1][C][NH3+1][C][=Branch1][C][=O][N][C@H1][Branch2][Ring1][N][C][C][C][=Branch1][C][=O][N][C@H1][Branch1][=N][C][C][C][C@H1][Branch1][C][NH3+1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]

The molecule is a peptide anion that is the conjugate base of L-alanyl-gamma-D-glutamyl-meso-diaminopimelic acid, arising from deprotonation of the the three carboxy groups and protonation of both amino groups; major species at pH 7.3. It is a conjugate base of a L-alanyl-gamma-D-glutamyl-meso-diaminopimelic acid.

SMILES: CC([NH3+])C(=O)NC(CCC(=O)NC(CCCC([NH3+])C(=O)[O-])C(=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>

[N][C][C][C][NH2+1][C][C][C][NH2+1][C][C][C][NH2+1][C][C][C][NH3+1]

The molecule is an organic cation obtained by protonation of four of the five amino groups of caldopentamine. It has a role as a marine metabolite. It is an ammonium ion derivative and an organic cation. It is a conjugate base of a caldopentamine(5+). It is a conjugate acid of a caldopentamine.

SMILES: NCCC[NH2+]CCC[NH2+]CCC[NH2+]CCC[NH3+]
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][=Branch1][C][=O][O][C][Branch1][=C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O]

The molecule is a fatty acid ester obtained by formal condensation of the carboxy group of (9Z)-octadecenoic acid with the hydroxy group of 5-hydroxyoctadecanoic acid. It is a fatty acid ester and a monocarboxylic acid. It derives from a 5-hydroxyoctadecanoic acid and an oleic acid. It is a conjugate acid of a 5-[(9Z)-octadecenoyloxy]octadecanoate.

SMILES: CCCCCCCCC=CCCCCCCCC(=O)OC(CCCCCCCCCCCCC)CCCC(=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][C@@H1][Branch2][Branch1][C][O][C@@H1][C@@H1][Branch2][Ring1][=Branch2][O][C@H1][C@H1][Branch1][C][O][C@@H1][Branch1][#Branch1][C@@H1][Branch1][C][O][C][O][O][C@H1][Branch1][C][O][C@H1][Ring1][N][O][O][C@H1][Branch1][#Branch1][C@@H1][Branch1][C][O][C][O][C@@H1][Branch1][C][O][C@@H1][Ring2][Ring1][=Branch2][O][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@@H1][Ring2][Ring2][Ring2][O]

The molecule is a trisaccharide cmoposed of two L-glycero-alpha-D-manno-heptopyranose residues and one N-acetyl-D-glucosamine residue, linked as shown; a part of the meningococcal inner core oligosacccharide with independent antigenic properties. It has a role as an antigen.

SMILES: CC(=O)NC1C(OC2C(OC3C(O)C(O)OC(C(O)CO)C3O)OC(C(O)CO)C(O)C2O)OC(CO)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][C][Branch1][C][C][=C][C][C][C@@H1][Branch1][C][C][C@H1][C][C][C@H1][C][=C][Branch1][=Branch2][C][C][C@][Ring1][=Branch2][Ring1][=Branch1][C][C@@][Branch1][C][C][C][C][C@H1][Branch1][C][O][C][C@@H1][Ring1][Branch2][C][C][Ring1][S]

The molecule is a cholestanoid and a 3beta-sterol. It has a role as a human metabolite, a Saccharomyces cerevisiae metabolite and a mouse metabolite. It derives from a hydride of a 5alpha-cholestane.

SMILES: CC(C)=CCCC(C)C1CCC2C3=C(CCC21C)C1(C)CCC(O)CC1CC3