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

The molecule is a tetrapeptide comprising in sequence an alpha-aspartyl residue, two lysyl residues and a beta-alanyl residue, to the nitrogen of the aspartyl residue of which are linked both a methyl group and a 7-nitro-2,1,3-benzoxadiazol-4-yl moiety, while the epsilon nitrogen of the lysyl(II) residue carries a biotin moiety. It is used a peptide probe, with the biotin moiety finding application in immunoassays. It has a role as a peptide probe and a peptide allergen.

SMILES: CN(c1ccc([N+](=O)[O-])c2nonc12)C(CC(=O)O)C(=O)NC(CCCCN)C(=O)NC(CCCCNC(=O)CCCCC1SCC2NC(=O)NC21)C(=O)NCCC(=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][=Branch1][C][=O][O][C@H1][Branch2][Ring1][Branch2][C][O][C][=Branch1][C][=O][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][O][P][=Branch1][C][=O][Branch1][C][O][O]

The molecule is a 1-acyl-2-linoleoyl-sn-glycero-3-phosphate in which the 1-acyl group is specified as stearoyl (octadecanoyl). It is a 1-acyl-2-linoleoyl-sn-glycero-3-phosphate and a phosphatidic acid 36:2. It derives from an octadecanoic acid. It is a conjugate acid of a 1-stearoyl-2-linoleoyl-sn-glycero-3-phosphate(2-).

SMILES: CCCCCC=CCC=CCCCCCCCC(=O)OC(COC(=O)CCCCCCCCCCCCCCCCC)COP(=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>

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

The molecule is a tetrapeptide composed of L-arginine, L-asparagine, L-glutamine, and L-arginine joined in sequence by peptide linkages. It has a role as a metabolite. It derives from a L-arginine, a L-asparagine and a L-glutamine.

SMILES: NC(=O)CCC(NC(=O)C(CC(N)=O)NC(=O)C(N)CCCN=C(N)N)C(=O)NC(CCCN=C(N)N)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>

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

The molecule is an N-acyl-sn-glycero-3-phosphoethanolamine(1-) in which the N-acyl group is specified as (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl; major species at pH 7.3. It is a conjugate base of a N-(4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-sn-glycero-3-phosphoethanolamine.

SMILES: CCC=CCC=CCC=CCC=CCC=CCC=CCCC(=O)NCCOP(=O)([O-])OCC(O)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][O][C][=Branch1][C][=O][C][=C][Branch1][C][C][N][C][=Branch1][C][=S][N][C][Ring1][Branch2][C][=C][C][=C][C][Branch1][Ring1][O][C][=C][Ring1][Branch2]

The molecule is a member of the class of thioureas that is 3,4-dihydropyrimidine-2(1H)-thione substituted by a 3-methoxyphenyl group at position 4, a methyl group at position 6 and a ethoxycarbonyl group at position 5. It is a pyrimidinecarboxylate ester, an aromatic ether, a member of thioureas and an ethyl ester.

SMILES: CCOC(=O)C1=C(C)NC(=S)NC1c1cccc(OC)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@@H1][O][C@@H1][Branch2][Ring1][C][O][C][C][C][C][C][C][C@@H1][Branch1][C][O][C][C][=Branch1][C][=O][O][C@H1][Branch1][C][O][C][C@H1][Ring2][Ring1][Ring2][O]

The molecule is an omega-hydroxy fatty acid ascaroside that is oscr#10 in which the pro-R hydrogen beta to the carboxy group is replaced by a hydroxy group. It is a metabolite of the nematode Caenorhabditis elegans. It has a role as a Caenorhabditis elegans metabolite. It is an omega-hydroxy fatty acid ascaroside, a 3-hydroxy carboxylic acid and a monocarboxylic acid. It derives from an oscr#10 and a (3R)-3,9-dihydroxynonanoic acid. It is a conjugate acid of a bhos#10(1-).

SMILES: CC1OC(OCCCCCCC(O)CC(=O)O)C(O)CC1O
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][C][=C][C][=C][Branch1][C][O][C][Branch1][C][O][=C][Ring1][Branch2][O][C][=C][C][Branch2][Ring2][#Branch2][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@H1][Branch2][Ring1][Branch1][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Ring1][#Branch2][O][C@H1][Ring2][Ring1][Branch1][O][=C][Branch1][C][O][C][Branch1][C][O][=C][Ring2][Ring2][O][Ring2][Ring1][#C]

The molecule is a glycosyloxyflavone that is 6-hydroxyluteolin attached to a beta-D-glucopyranosyl-(1->3)-beta-D-glucopyranosyl moiety at position 7 via a glycosidic linkage. Isolated from Globularia cordifolia and Globularia alypum, it exhibits antioxidant activity. It has a role as a metabolite and an antioxidant. It is a disaccharide derivative, a tetrahydroxyflavone and a glycosyloxyflavone. It derives from a luteolin.

SMILES: O=c1cc(-c2ccc(O)c(O)c2)oc2cc(OC3OC(CO)C(O)C(OC4OC(CO)C(O)C(O)C4O)C3O)c(O)c(O)c12
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][C][=C][Ring1][=Branch1][C]

The molecule is a monomethoxybenzene that is o-cresol in which phenolic hydroxy group has been converted to the corresponding methyl ether. A 'green' solvent (b.p. 171 ℃) and food flavour ingredient, it is found in mastic oils, virgin olive oils and frankincense. It has a role as a polar aprotic solvent and a flavouring agent. It is a monomethoxybenzene, a volatile organic compound and a member of toluenes. It derives from an o-cresol.

SMILES: COc1ccccc1C
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][O][C@@H1][O][C][C@@][Branch1][C][C][C][C][C][C@@][Ring1][=Branch2][C][=C][C][Branch1][C][O][=C][Branch1][=Branch1][C][Branch1][C][C][C][C][=C][Ring1][#Branch2][C][C][C@@H1][Ring2][Ring1][Ring1][Ring1][=C]

The molecule is an abietane diterpenoid isolated from the stem bark of Fraxinus sieboldiana. It has a role as a plant metabolite. It is an abietane diterpenoid, a cyclic ether and a tetracyclic diterpenoid.

SMILES: CCOC1OCC2(C)CCCC13c1cc(O)c(C(C)C)cc1CCC23
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][N][C][C][C][N][=C][Ring1][=Branch1][/C][=C][/C][=C][C][=C][S][Ring1][Branch1]

The molecule is a carboxamidine that is 1,4,5,6-tetrahydropyrimidine that is substituted at position 1 by a methyl group and at position 2 by an (E)-2-(2-thienyl)vinyl group. It is used, particularly as the embonate [4,4'-methylenebis(3-hydroxy-2-naphthoate)] salt, as an anthelmintic that is effective against intestinal nematodes including threadworms, roundworms and hookworms, and is included in the WHO 'Model List of Essential Medicines'. It has a role as an antinematodal drug. It is a member of thiophenes, a carboxamidine and a member of 1,4,5,6-tetrahydropyrimidines.

SMILES: CN1CCCN=C1C=Cc1cccs1
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][Branch1][C][F][Branch1][C][F][F]

The molecule is a monocarboxylic acid that is the trifluoro derivative of acetic acid. It has a role as a reagent and a human xenobiotic metabolite. It derives from an acetic acid. It is a conjugate acid of a trifluoroacetate.

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

The molecule is a phenothiazine substituted on the nitrogen by a 3-(morpholin-4-yl)propanoyl group, and at position 2 by an (ethoxycarbonyl)amino group. It has a role as an anti-arrhythmia drug. It is a member of phenothiazines, a member of morpholines and a carbamate ester.

SMILES: CCOC(=O)Nc1ccc2c(c1)N(C(=O)CCN1CCOCC1)c1ccccc1S2
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][C@H1][Branch2][Ring1][Branch1][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C][N+1][Branch1][C][C][Branch1][C][C][C][O][C][Branch1][C][C][=O]

The molecule is a 1,2-diacyl-sn-glycero-3-phosphocholine in which the two acyl substituents at positions 1 and 2 are specified as stearoyl and acetyl respectively. It derives from an acetic acid and an octadecanoic acid.

SMILES: CCCCCCCCCCCCCCCCCC(=O)OCC(COP(=O)([O-])OCC[N+](C)(C)C)OC(C)=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][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch2][C][C][=C][N][=C][NH1][Ring1][Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][Branch1][C][N][=O][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][=Branch1][C@@H1][Branch1][C][C][O][N][C][=Branch1][C][=O][C@@H1][C][C][C][N][Ring1][Branch1][C][=Branch1][C][=O][C@@H1][C][C][C][N][Ring1][Branch1][C][=Branch1][C][=O][C@H1][Branch1][#Branch2][C][C][=C][C][=C][C][=C][Ring1][=Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][Branch1][C][N][=O][N][C][Ring2][=Branch1][Branch2][=O]

The molecule is a homodetic cyclic peptide composed of L-asparaginyl, L-phenylalanyl, L-prolyl, L-threonyl, L-histidyl and L-valyl residues linked in a sequence. It is isolated from the seeds of Annona montana and has been shown to exhibit anti-inflammatory activity. It has a role as a metabolite and an anti-inflammatory agent.

SMILES: CC(C)C1NC(=O)C(Cc2cnc[nH]2)NC(=O)C(CC(N)=O)NC(=O)C(Cc2ccccc2)NC(=O)C(C(C)O)NC(=O)C2CCCN2C(=O)C2CCCN2C(=O)C(Cc2ccccc2)NC(=O)C(CC(N)=O)NC1=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@@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 an unsaturated fatty acyl-CoA that results from the formal condensation of the thiol group of coenzyme A with the carboxy group of (3R,13Z)-3-hydroxyicosenoic acid. It is a (R)-3-hydroxyacyl-CoA, a long-chain fatty acyl-CoA, an unsaturated fatty acyl-CoA and an 11,12-saturated fatty acyl-CoA. It is a conjugate acid of a (3R,13Z)-3-hydroxyicosenoyl-CoA(4-).

SMILES: CCCCCCC=CCCCCCCCCCC(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][S+1][Branch1][N][C][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][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 sulfonium betaine that is the conjugate base of S-adenosyl-4-methylthio-2-oxobutanoic acid, arising from deprotonation of the carboxy group. It has a role as a Saccharomyces cerevisiae metabolite. It is a sulfonium betaine and a carboxylic acid anion. It derives from a 4-methylthio-2-oxobutanoate. It is a conjugate base of a S-adenosyl-4-methylthio-2-oxobutanoic acid.

SMILES: C[S+](CCC(=O)C(=O)[O-])CC1OC(n2cnc3c(N)ncnc32)C(O)C1O