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

The molecule is an N-acylphytosphingosine-1-phosphoethanolamine in which the N-acyl group is specified as hexadecanoyl. It derives from a hexadecanoic acid and a phytosphingosine. It is a tautomer of a N-hexadecanoylphytosphingosine-1-phosphoethanolamine zwitterion.

SMILES: CCCCCCCCCCCCCCCC(=O)NC(COP(=O)(O)OCCN)C(O)C(O)CCCCCCCCCCCCCC
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@H1][Branch1][S][O][C][=C][C][=C][C][=C][C][=C][C][=C][Ring1][#Branch2][Ring1][=Branch1][C][=C][C][=C][S][Ring1][Branch1].[Cl]

The molecule is a duloxetine hydrochloride in which the duloxetine moiety has S configuration. It has a role as an antidepressant. It contains a (S)-duloxetine.

SMILES: CNCCC(Oc1cccc2ccccc12)c1cccs1.Cl
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][=N+1][Branch1][C][O-1][N][C][C][N][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][C][Ring1][Branch2][C][N][Branch1][=Branch1][N+1][=Branch1][C][=O][O-1][C][Branch2][Ring1][Branch1][C][Branch1][=Branch2][N][Ring1][Branch2][N+1][=Branch1][C][=O][O-1][N][Ring2][Ring1][C][N+1][=Branch1][C][=O][O-1][N][Ring2][Ring1][#Branch1][N+1][=Branch1][C][=O][O-1]

The molecule is a polycyclic cage that is hexaazaisowurtzitane in which all six amino hydrogens are replaced by nitro groups. It has a role as an explosive. It is a N-nitro compound and a polycyclic cage.

SMILES: O=[N+]([O-])N1C2C3N([N+](=O)[O-])C1C1N([N+](=O)[O-])C(C(N1[N+](=O)[O-])N3[N+](=O)[O-])N2[N+](=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][N][Branch1][Ring1][C][C][C][=C][C][=C][Branch1][O][N][=N][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][Ring1][=C]

The molecule is an azobenzene that is N,N-diethylaniline substituted at position 4 by a phenylazo group. It has a role as a dye and a mutagen. It is a member of azobenzenes, a tertiary amino compound and a substituted aniline.

SMILES: CCN(CC)c1ccc(N=Nc2ccccc2)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>

[C][C][N+1][Branch1][Ring1][C][C][=C][C][=C][C][=N][C][=C][C][Branch1][C][C][=C][Branch1][C][N][C][=C][Ring1][Branch2][O][C][Ring1][N][=C][Ring1][S]

The molecule is an organic cation that is phenoxazin-5-ium substituted by methyl, amino and diethylamino groups at positions 2, 3 and 7 respectively. The tetrachlorozincate salt salt is the histological dye 'brilliant cresyl blue'.

SMILES: CC[N+](CC)=c1ccc2nc3cc(C)c(N)cc3oc-2c1
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-1][C][C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C][Branch1][C][O][C][=Branch1][C][=O][O-1].[H+1].[H+1]

The molecule is a tricarboxylic acid monoanion. It is a conjugate base of a homoisocitric acid. It is a conjugate acid of a homoisocitrate(2-).

SMILES: O=C([O-])CCC(C(=O)[O-])C(O)C(=O)[O-].[H+].[H+]
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@H1][O][C@@H1][Branch1][C][O][C@H1][Branch1][P][O][C@@H1][O][C][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Ring1][Branch2][O][C@@H1][Branch1][C][O][C@@H1][Ring2][Ring1][C][O]

The molecule is a glycosylglucose consisting of an alpha-L-arabinopyranose residue and a beta-D-glucopyranose residue joined in sequence by a (1->2) glycosidic bond. It derives from an alpha-L-arabinopyranose and a beta-D-glucose.

SMILES: OCC1OC(O)C(OC2OCC(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][C][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][C][=Branch1][C][=O][O]

The molecule is an amino dicarboxylic acid that is adipic acid in which one of the hydrogens at position 3 is replaced by an amino group. It is a beta-amino acid, an amino dicarboxylic acid and a gamma-amino acid. It derives from an adipic acid.

SMILES: NC(CCC(=O)O)CC(=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][=Branch2][Ring1][N][=C][/C][C][/C][Branch1][C][C][=C][/C][C][/C][Branch1][C][C][=C][/C][S][C][C@H1][Branch1][C][N][C][=Branch1][C][=O][O][C][O]

The molecule is an L-cysteine thioether that is S-(2E,6E)-farnesyl-L-cysteine bearing a hydroxy substituent on the pro-Z-methyl group at the 12-position. It derives from a S-farnesyl-L-cysteine.

SMILES: CC(=CCCC(C)=CCCC(C)=CCSCC(N)C(=O)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>

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

The molecule is the 1,2-cyclic phosphate derived from glycerol. It derives from a glycerol. It is a conjugate acid of a glycerol 1,2-cyclic phosphate(1-).

SMILES: O=P1(O)OCC(CO)O1
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][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 (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoic acid. It is a member of n-3 PUFA and a product of alpha-linolenoic acid metabolism. It has a role as a mouse metabolite. It is an unsaturated fatty acyl-CoA and a long-chain fatty acyl-CoA. It derives from an all-cis-docosa-4,7,10,13,16,19-hexaenoic acid. It is a conjugate acid of a (4Z,7Z,10Z,13Z,16Z,19Z)-docosahexaenoyl-CoA(4-).

SMILES: CCC=CCC=CCC=CCC=CCC=CCC=CCCC(=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][=Branch1][C][=O][N][C@H1][C@@H1][Branch2][#Branch1][#C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][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][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@@H1][Ring2][=Branch1][=Branch2][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]

The molecule is an organophosphate oxoanion arising from deprotonation of both free diphosphate OH groups of alpha-D-Gal-(1->3)-alpha-D-GlcNAc-diphospho-ditrans,octacis-undecaprenol; major species at pH 7.3. It is a conjugate base of an alpha-D-Gal-(1->3)-alpha-D-GlcNAc-diphospho-ditrans,octacis-undecaprenol.

SMILES: CC(=O)NC1C(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)OC(CO)C(O)C1OC1OC(CO)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>

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

The molecule is an organic heteropentacyclic compound and ent-kaurane diterpenoid with formula C20H28O6 isolated from the leaves of the medicinal herb Rabdosia rubescens. It has a role as an antineoplastic agent, an angiogenesis inhibitor, an apoptosis inducer, an anti-asthmatic agent, a plant metabolite and an antibacterial agent. It is an organic heteropentacyclic compound, an enone, a cyclic hemiketal, a secondary alcohol and an ent-kaurane diterpenoid.

SMILES: C=C1C(=O)C23C(O)C1CCC2C12COC3(O)C(O)C1C(C)(C)CCC2O
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][NH3+1][C][C][=Branch1][C][=O][O-1]

The molecule is an amino acid zwitterion that is 3-aminobutanoic acid in which a proton has been transferred from the carboxy group to the amino group. It is the major species at pH 7.3. It is a conjugate acid of a 3-aminobutyrate. It is a tautomer of a 3-aminobutanoic acid.

SMILES: CC([NH3+])CC(=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@@H1][Branch1][C][O][C@@H1][Branch1][C][O][C@H1][Branch2][Ring1][=Branch1][C][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][N][C][=Branch1][C][=O][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][Ring1][=Branch1]

The molecule is a glycophytoceramide having an alpha-D-galactopyranosyl residue at the O-1 position and a 21-phenylhenicosanoyl group attached to the nitrogen. It derives from an alpha-D-galactose.

SMILES: CCCCCCCCCCCCCCC(O)C(O)C(COC1OC(CO)C(O)C(O)C1O)NC(=O)CCCCCCCCCCCCCCCCCCCCc1ccccc1
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][=C][Branch1][=Branch2][C][Branch1][C][F][Branch1][C][F][F][C][=C][Ring1][#Branch2]

The molecule is a member of the class of (trifluoromethyl)benzenes consisting of trans-cinnamic acid having a trifluoromethyl substituent at the para-position. It is a member of cinnamic acids and a member of (trifluoromethyl)benzenes. It derives from a trans-cinnamic acid.

SMILES: O=C(O)C=Cc1ccc(C(F)(F)F)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>

[BH0]

The molecule is a nonmetal atom, a boron group element atom and a metalloid atom. It has a role as a micronutrient.

SMILES: [B]
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][=Branch1][C][=O][C][C][=Branch1][C][=O][C][C][C][C]

The molecule is a beta-diketone that is icosane in which the methylene hydrogens at positions 5 and 7 have been replaced by oxo groups. It has a role as a mouse metabolite and a rat metabolite. It derives from a hydride of an icosane.

SMILES: CCCCCCCCCCCCCC(=O)CC(=O)CCCC
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][Ring1][C][=O][C@H1][C][C][C@H1][Branch1][C][C][C@H1][Ring1][=Branch1][C][=O]

The molecule is an iridodial that is (1R,2R)-2-[(2R)-1-oxopropan-2-yl]cyclopentanecarbaldehyde substituted by a methyl group at position 2 (2S-stereoisomer). It has a role as a plant metabolite.

SMILES: CC(C=O)C1CCC(C)C1C=O