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>

[O][=C][Branch1][C][O][C][C][C][=C][NH1][C][=Branch1][#Branch2][=C][Ring1][Branch1][C][C][=Branch1][C][=O][O][C][C][NH1][C][=Branch2][Ring1][Ring2][=C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][=Ring1][=Branch2][C][C][C][=Branch1][C][=O][O][C][C][NH1][C][=Branch2][Ring1][Ring2][=C][Branch1][#Branch1][C][C][=Branch1][C][=O][O][C][=Ring1][=Branch2][C][C][C][=Branch1][C][=O][O][C][C][NH1][C][=Branch2][Ring1][Ring2][=C][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][=Ring1][#Branch2][C][C][=Branch1][C][=O][O][C][Ring2][Branch1][=Branch1]

The molecule is a uroporphyrinogen. It has a role as an Escherichia coli metabolite and a mouse metabolite. It is a conjugate acid of a uroporphyrinogen III(8-).

SMILES: O=C(O)CCc1c2[nH]c(c1CC(=O)O)Cc1[nH]c(c(CC(=O)O)c1CCC(=O)O)Cc1[nH]c(c(CC(=O)O)c1CCC(=O)O)Cc1[nH]c(c(CCC(=O)O)c1CC(=O)O)C2
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][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][C][=C][Branch1][C][O][C][Branch1][C][C][N][Branch1][C][C][C][Ring1][Branch2][=O]

The molecule is a member of the class of pyrrolidin-2-ones that is 1,5-dimethylpyrrolidine-2,4-dione substituted by a 1-hydroxy-12-methyltetradecylidene moiety at position 3. Isolated from the marine sponge Melophlus sarasinorum and other species of genus Melophlus, it exhibits cytotoxicity against murine leukemia cell line. It has a role as a metabolite and an antineoplastic agent. It is an enol and a member of pyrrolidin-2-ones.

SMILES: CCC(C)CCCCCCCCCCC(=O)C1=C(O)C(C)N(C)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>

[C][C][=C][Branch2][Ring1][Ring2][/C][=C][/C][Branch1][C][C][=C][\C][=C][\C][Branch1][C][C][=C][\C][=Branch1][C][=O][O-1][C][Branch1][C][C][Branch1][C][C][C][C][C][Ring2][Ring1][Branch1][=O]

The molecule is a retinoid anion that is the conjugate base of 9-cis-4-oxoretinoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a retinoid anion and an oxo monocarboxylic acid anion. It is a conjugate base of a 9-cis-4-oxoretinoic acid.

SMILES: CC(C=CC1=C(C)C(=O)CCC1(C)C)=CC=CC(C)=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][C][C][C][=Branch1][C][=O][O][C][C@@H1][Branch1][C][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C][Branch1][C][O][C][O]

The molecule is a 1-acyl-sn-glycero-3-phosphoglycero(1-) in which the 1-acyl substituent is specified as oleoyl; major species at pH 7.3. It is a conjugate base of a 1-oleoyl-sn-glycero-3-phosphoglycerol.

SMILES: CCCCCCCCC=CCCCCCCCC(=O)OCC(O)COP(=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][O][C][=C][C][Branch2][Ring1][=Branch2][C][O][C][=C][C][Branch1][C][O][=C][C][Branch1][C][O][=C][Ring1][Branch2][C][=Branch1][C][=O][C][=Ring1][=N][O-1][=C][C][=C][Ring2][Ring1][Ring2][O]

The molecule is a flavonoid oxoanion that is the conjugate base of isorhamnetin, arising from the deprotonation of the 7-hydroxy group; major species at pH 7.3. It is a conjugate base of an isorhamnetin.

SMILES: COc1cc(-c2oc3cc(O)cc(O)c3c(=O)c2[O-])ccc1O
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][NH1][C][=C][C][Branch1][=C][N][C][=Branch1][C][=O][C][C][C][C][=Branch1][C][=O][O-1][=C][C][=C][Ring1][#C][NH1+1][=Ring2][Ring1][C]

The molecule is a zwitterion obtained by transfer of a proton from the carboxy group to position 3 of the benzimidazole ring of 5-[(2-aminobenzimidazol-6-yl)amino]-5-oxopentanoic acid. It is a zwitterion and a dicarboxylic acid monoamide. It is a tautomer of a 5-[(2-aminobenzimidazol-6-yl)amino]-5-oxopentanoic acid.

SMILES: Nc1[nH]c2cc(NC(=O)CCCC(=O)[O-])ccc2[nH+]1
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][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][Branch1][Ring1][C][O][O][C@H1][Ring2][Ring1][Branch1][O]

The molecule is an amino disaccharide consisting of beta-D-glucopyranose and 2-acetamido-2-deoxy-beta-D-glucopyranose residues joined in sequence by a (1->4) glycosidic bond. It is a member of acetamides, an amino disaccharide and a glycosylglucose derivative. It derives from a beta-D-glucose and a N-acetyl-beta-D-glucosamine.

SMILES: CC(=O)NC1C(O)OC(CO)C(OC2OC(CO)C(O)C(O)C2O)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][N][C][=Branch1][C][=O][C][N][=C][Branch1][=Branch2][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=C][C][Branch1][C][Cl][=C][C][=C][Ring1][#Branch1][Ring2][Ring1][Ring1]

The molecule is a 1,4-benzodiazepinone that is 1,3-dihydro-2H-1,4-benzodiazepin-2-one substituted by a chloro group at position 7, a methyl group at position 1 and a phenyl group at position 5. It has a role as a xenobiotic, an environmental contaminant, an anxiolytic drug, an anticonvulsant and a sedative. It is a 1,4-benzodiazepinone and an organochlorine compound.

SMILES: CN1C(=O)CN=C(c2ccccc2)c2cc(Cl)ccc21
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@H1][Branch1][P][N][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O]

The molecule is a dipeptide that is N-[(2S)-2-aminobutanoyl]glycine in which the terminal amino group has been acylated by formal condensation of the 5-carboxy group of 2-oxopentanedioic acid. It is a dipeptide, a secondary carboxamide and an oxo dicarboxylic acid. It is a conjugate acid of a N-(4-carboxy-4-oxobutanoyl)-L-ethylglycylglycine(2-).

SMILES: CCC(NC(=O)CCC(=O)C(=O)O)C(=O)NCC(=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][Ring1][#Branch2][O][C@H1][C@H1][Branch1][C][O][C@@H1][Branch1][Ring1][C][O][O][C][Branch1][C][O][C@@H1][Ring1][#Branch2][N][C][Branch1][C][C][=O][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@@H1][Ring2][Ring1][Branch2][O]

The molecule is an amino disaccharide consisting of 2-acetamido-2-deoxy-alpha-D-glucopyranose and 2-acetamido-2-deoxy-D-glucopyranose residues joined in sequence by a (1->3) glycosidic bond. It is an amino disaccharide and a member of acetamides.

SMILES: CC(=O)NC1C(OC2C(O)C(CO)OC(O)C2NC(C)=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>

[O][=C][Branch1][C][O][/C][=C][\C][=C][N][=C][NH1][Ring1][Branch1]

The molecule is a urocanic acid in which the double bond of the carboxyethene moiety has Z configuration. It is a conjugate acid of a cis-urocanate.

SMILES: O=C(O)C=Cc1cnc[nH]1
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][C@@H1][Branch1][C][NH3+1][C][O]

The molecule is a cationic sphingoid that is the conjugate acid of 3-dehydrosphinganine; major species at pH 7.3. It has a role as a human metabolite and a Saccharomyces cerevisiae metabolite. It is a conjugate acid of a 3-dehydrosphinganine.

SMILES: CCCCCCCCCCCCCCCC(=O)C([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][Branch1][C][C][C@H1][Branch1][P][N][C][=Branch1][C][=O][C@@H1][Branch1][C][N][C][C][C][Branch1][C][N][=O][C][=Branch1][C][=O][O]

The molecule is a dipeptide obtained by formal condensation of the carboxy group of L-glutamine with the amino group of L-valine. It derives from a L-glutamine and a L-valine.

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

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

The molecule is a nine-membered branched glucosamine oligosaccharide consisting of eight D-mannosyl residues and one N-acetylglucosamine residue (the latter being located at the reducing end). An intermediate glycan structure of glycosylated proteins.

SMILES: CC(=O)NC1C(O)OC(CO)C(OC2OC(COC3OC(COC4OC(CO)C(O)C(O)C4O)C(O)C(OC4OC(CO)C(O)C(O)C4OC4OC(CO)C(O)C(O)C4O)C3O)C(O)C(OC3OC(CO)C(O)C(O)C3OC3OC(CO)C(O)C(O)C3OC3OC(CO)C(O)C(O)C3O)C2O)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>

[7Li]

The molecule is the stable isotope of lithium with relative atomic mass 7.016004, 92.5 atom percent natural abundance and nuclear spin 3/2.

SMILES: [Li]
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][Branch1][=N][C][=C][Ring1][=Branch1][C][C][C][C][C][C][Ring1][=Branch1][C][=C][N][Ring1][=N][C][C][N][C@H1][Ring1][=Branch1][C][C][C][Ring1][#Branch2]

The molecule is an 8-cyclohexyl-2,3,3a,4,5,6-hexahydropyrazino[3,2,1-jk]carbazole that is the (S)-enantiomer of tetrindole. It is a conjugate base of a (S)-tetrindole(1+). It is an enantiomer of a (R)-tetrindole.

SMILES: c1cc2c(cc1C1CCCCC1)c1c3n2CCNC3CCC1
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][=Branch1][C][=O][C@H1][C][C@H1][C][C][C][C][C@@H1][Ring1][=Branch1][C@@H1][Branch1][#C][/C][=C][/C@H1][C][C][C][C@H1][Branch1][C][C][N][Ring1][#Branch1][C][C@@H1][Ring2][Ring1][Branch2][Ring2][Ring1][Ring2]

The molecule is a piperidine alkaloid that is decahydronaphtho[2,3-c]furan-1(3H)-one substituted by a methyl group at position 3 and a 2-[(2R,6S)-1,6-dimethylpiperidin-2-yl]ethenyl group at position 4. It has been isolated from the bark of Australian magnolias. It has a role as a muscarinic antagonist. It is a piperidine alkaloid, a gamma-lactone and an organic heterotricyclic compound.

SMILES: CC1OC(=O)C2CC3CCCCC3C(C=CC3CCCC(C)N3C)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][=Branch1][C][=O][C@@][Branch1][C][O][C][C][C@H1][C@@H1][C][C][C][=C][/C][=Branch1][=Branch2][=N][/O][C][C][=Branch1][C][=O][O][C][C][C@][Ring1][N][Branch1][C][C][C@H1][Ring1][P][C][C][C@@][Ring2][Ring1][Branch1][Ring2][Ring1][=Branch2][C]

The molecule is an oxime O-ether consisting of progesterone having an O-(carboxymethyl)oxime group at the 3-position and a hydroxy group at the 17alpha-position. It is a monocarboxylic acid, a 20-oxo steroid, an oxime O-ether, a 17alpha-hydroxy steroid and a tertiary alpha-hydroxy ketone. It derives from a progesterone 3-O-(carboxymethyl)oxime.

SMILES: CC(=O)C1(O)CCC2C3CCC4=CC(=NOCC(=O)O)CCC4(C)C3CCC21C