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][S][C][C][C][=Branch1][C][=O][O-1]

The molecule is a thia fatty acid anion that is the conjugate base of 3-(methylthio)propionic acid. It has a role as a human metabolite. It derives from a propionate. It is a conjugate base of a 3-(methylthio)propionic acid.

SMILES: CSCCC(=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][NH1][N][Branch2][Ring1][#Branch1][C][=C][C][Branch1][C][Cl][=C][Branch1][=Branch2][S][=Branch1][C][=O][=Branch1][C][=O][O-1][C][=C][Ring1][O][Cl][C][=Branch1][C][=O][C][=Ring2][Ring1][C][N][=N][C][=C][C][=C][Branch1][=Branch2][S][=Branch1][C][=O][=Branch1][C][=O][O-1][C][=C][Ring1][#Branch2]

The molecule is an organosulfonate oxoanion resulting from the removal of a proton from both of the sulfo groups of 2,5-dichloro-4-{5-hydroxy-3-methyl-4-[(4-sulfophenyl)diazenyl]pyrazol-1-yl}benzene-1-sulfonic acid. It is a conjugate base of a lissamine fast yellow (acid form).

SMILES: Cc1[nH]n(-c2cc(Cl)c(S(=O)(=O)[O-])cc2Cl)c(=O)c1N=Nc1ccc(S(=O)(=O)[O-])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][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][C][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Ring1][#Branch2][O]

The molecule is a 1-octadecanoyl-2-acyl-sn-glycero-3-phospho-1D-myo-inositol in which the 2-acyl group is specified as (5Z,8Z,11Z,14Z)-icosa-5,8,11,14-tetraenoyl (arachidonoyl). It has a role as a mouse metabolite. It is a 1-octadecanoyl-2-acyl-sn-glycero-3-phospho-1D-myo-inositol and a phosphatidylinositol(18:0/20:4). It derives from an octadecanoic acid and an arachidonic acid. It is a conjugate acid of a 1-octadecanoyl-2-arachidonoyl-sn-glycero-3-phospho-D-myo-inositol(1-).

SMILES: CCCCCC=CCC=CCC=CCC=CCCCC(=O)OC(COC(=O)CCCCCCCCCCCCCCCCC)COP(=O)(O)OC1C(O)C(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>

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

The molecule is an allo-bile acid that is 5alpha-cholan-24-oic acid bearing two alpha-hydroxy substituents at position 3 and 12. It has a role as a marine metabolite, a rat metabolite and a xenobiotic metabolite. It is an allo-bile acid, a 12alpha-hydroxy steroid, a 3alpha-hydroxy steroid and a C24-steroid. It is a conjugate acid of an allodeoxycholate.

SMILES: CC(CCC(=O)O)C1CCC2C3CCC4CC(O)CCC4(C)C3CC(O)C12C
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][O][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 androstanoid that is the acetate derivative of testosterone. It has a role as a human metabolite. It is a sterol ester, an androstanoid and a 3-oxo-Delta(4) steroid. It derives from a testosterone.

SMILES: CC(=O)OC1CCC2C3CCC4=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>

[O][=C][Branch1][C][O][/C][Branch1][C][O-1][=C][\C][=C][/C][=Branch1][C][=O][C][=C][C][=C][C][=C][Ring1][=Branch1][O-1]

The molecule is a hydroxy monocarboxylic acid anion obtained by deprotonation of the carboxy and phenol groups of 2-hydroxy-6-(2-hydroxyphenyl)-6-oxo-cis,cis-hexa-2,4-dienoic acid. It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a hydroxy monocarboxylic acid anion and a phenolate anion. It is a conjugate base of a 2-hydroxy-6-(2-hydroxyphenyl)-6-oxo-cis,cis-hexa-2,4-dienoate.

SMILES: O=C(O)C([O-])=CC=CC(=O)c1ccccc1[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@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-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 tetraanion of (S)-3-hydroxybutanoyl-CoA arising from deprotonation of the phosphate and diphosphate OH groups. It has a role as a human metabolite. It is a conjugate base of a (S)-3-hydroxybutanoyl-CoA.

SMILES: CC(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][NH2+1][C@@H1][C][C][=C][NH1][C][=C][C][=C][C][=Branch1][=Branch1][=C][Ring1][=Branch2][Ring1][=Branch1][C@H1][Ring1][N][/C][=C][Branch1][C][\C][C][O]

The molecule is an organic cation that is the conjugate acid of chanoclavine-I, obtained by protonation of the secondary amino group. It is an organic cation and an ammonium ion derivative. It is a conjugate acid of a chanoclavine-I.

SMILES: C[NH2+]C1Cc2c[nH]c3cccc(c23)C1C=C(C)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][=C][Branch1][C][O][C@H1][Branch1][C][O][C@@H1][Branch1][C][O][C][O]

The molecule is the L-enantiomer of threonic acid. It has a role as a plant metabolite, a Daphnia magna metabolite and an algal metabolite. It is a conjugate acid of a L-threonate. It is an enantiomer of a D-threonic acid.

SMILES: O=C(O)C(O)C(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][C][C@H1][O][C][Branch1][C][O][C][C@@H1][Branch1][C][O][C@@H1][Ring1][Branch2][O]

The molecule is a 2-deoxy-D-glucose that is D-glucopyranose in which the hydroxy group at position 2 has been replaced by a hydrogen. It has a role as a metabolite. It derives from a D-glucopyranose.

SMILES: OCC1OC(O)CC(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][=Branch1][C][=O][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C@@H1][Ring1][O][C][C][Ring2][Ring1][Ring1]

The molecule is a steroid acid anion that is the conjugate base of 3-dehydro-4-carboxyzymosterol, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a 3-dehydro-4-carboxyzymosterol.

SMILES: CC(C)=CCCC(C)C1CCC2C3=C(CCC21C)C1(C)CCC(=O)C(C(=O)[O-])C1CC3
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][#Branch2][O][C@H1][C@@H1][Branch1][C][O][C@@H1][Branch1][Ring1][C][O][O][C@@H1][Branch2][Ring1][Branch1][O][C][C@H1][O][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@@H1][Branch1][C][O][C@H1][Ring1][=Branch2][O][C@@H1][Ring2][Ring1][Branch1][O][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@@H1][Ring2][Ring1][#C][O]

The molecule is a trisaccharide consisting of alpha-L-fucopyranose and two beta-D-galactopyranose residues joined in sequence by (1->3) and (1->6) glycosidic bonds. It derives from a beta-(1->6)-galactobiose and an alpha-L-fucose.

SMILES: CC1OC(OC2C(O)C(CO)OC(OCC3OC(O)C(O)C(O)C3O)C2O)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][N][Branch2][Ring1][Ring2][C@H1][C][C][C@@H1][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][O][Ring1][O][C][=Branch1][C][=O][NH1][C][Ring2][Ring1][C][=O]

The molecule is a 2',3'-dideoxyribonucleoside monophosphate oxoanion obtained from 2',3'-dideoxythymidine phosphate by deprotonation of the phosphate OH groups; major species at pH 7.3

SMILES: Cc1cn(C2CCC(COP(=O)([O-])[O-])O2)c(=O)[nH]c1=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][Branch1][Ring1][C][O][=C][Branch2][Ring2][Ring2][C][=C][C][=C][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][Branch1][C][O][=C][Ring2][Ring1][Ring1][O][C][=C][C][Branch2][Ring2][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][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][C][Branch1][C][O][=C][Ring2][Branch1][#Branch1][Ring2][Ring1][=C]

The molecule is a homoflavonoid glycoside that is ophioglonol attached to a 2-O-(beta-D-glucopyranosyl)-beta-D-glucopyranosyl and beta-D-glucopyranosyl residues at positions 7 and 4' respectively via glycosidic linkages. It has been isolated from the whole plants of Ophioglossum pedunculosum. It has a role as a metabolite and a plant metabolite. It is a beta-D-glucoside, a homoflavonoid glycoside and a hydroxy homoflavonoid. It derives from an ophioglonol.

SMILES: O=c1c(CO)c(-c2ccc(OC3OC(CO)C(O)C(O)C3O)c(O)c2)oc2cc(OC3OC(CO)C(O)C(O)C3OC3OC(CO)C(O)C(O)C3O)cc(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][=C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][=C][C][=C][C][=C][Ring1][=Branch1][C][Ring1][#Branch2][=C][C][=C][C][=C][C][=C][Ring1][=Branch1][Ring1][#Branch2]

The molecule is an ortho- and peri-fused polycyclic arene that consists of a benzene ring fused with a acephenanthrylene ring. It has a role as a mutagen.

SMILES: c1ccc2c(c1)-c1cccc3c1c-2cc1ccccc13
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][N][Branch1][#Branch2][C][=Branch1][C][=O][C][=Branch1][C][=O][O][C][=C][Branch1][C][C][C][=C][C][=C][Ring1][#Branch1][C][C]

The molecule is a monocarboxylic acid that is oxoacetic acid substituted by a (ethoxymethyl)(2-ethyl-6-methylphenyl)amino group at position 2. It is a metabolite of acetochlor. It has a role as a marine xenobiotic metabolite. It is an aromatic amide, an ether and a monocarboxylic acid.

SMILES: CCOCN(C(=O)C(=O)O)c1c(C)cccc1CC
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@@][Branch1][C][C][C@@H1][C][C][=C][C@@H1][Branch1][=C][C][C][C@H1][Branch1][C][O][C][Ring1][#Branch1][Branch1][C][C][C][C@][Ring1][=N][Branch1][C][C][C][=Branch1][C][=O][C][C@][Ring2][Ring1][#Branch1][Ring2][Ring1][Ring2][C]

The molecule is a tetracyclic triterpenoid that is cucurbitadienol in which the methylene hydrogens at position 11 have been replaced by an oxo group. It has a role as a plant metabolite. It is a tetracyclic triterpenoid, a cyclic terpene ketone and a secondary alcohol. It derives from a cucurbitadienol. It derives from a hydride of a cucurbitane.

SMILES: CC(C)=CCCC(C)C1CCC2(C)C3CC=C4C(CCC(O)C4(C)C)C3(C)C(=O)CC12C
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][C][Branch1][C][C][O]

The molecule is a butanediol in which hydroxylation is at C-2 and C-3. It is a butanediol, a glycol and a secondary alcohol.

SMILES: CC(O)C(C)O