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][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][C][=C][Ring2][Ring1][C][O]

The molecule is a monohydroxybenzoic acid that is 2,5-dihydroxybenzoic acid in which the phenolic hydrogen at position 5 has been replaced by a beta-D-glucosyl residue. It has a role as a Brassica napus metabolite. It is a beta-D-glucoside and a monohydroxybenzoic acid. It derives from a 2,5-dihydroxybenzoic acid.

SMILES: O=C(O)c1cc(OC2OC(CO)C(O)C(O)C2O)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>

[C][C][Branch1][C][C][=C][C][C][/C][Branch1][C][C][=C][/C][C][/C][Branch1][C][C][=C][/C][C@@][O][C@@H1][Ring1][Ring1][C][=Branch1][C][=O][C][Branch2][Ring1][Branch1][C][O][C][=Branch1][C][=O][C][C][Branch1][C][C][Branch1][C][O][C][C][=Branch1][C][=O][O][=C][C][Ring2][Ring1][Ring2][=O]

The molecule is a class I yanuthone that is yanuthone E in which the secondary hydroxy group has been oxidised to the corresponding ketone. It is the only one of the sixteen yanuthones described up to 2015 to display strong antimicrobial activity. It has a role as an Aspergillus metabolite and an antifungal agent. It is a class I yanuthone, a dicarboxylic acid monoester and a tertiary alcohol. It derives from a yanuthone E and a 3-hydroxy-3-methylglutaric acid.

SMILES: CC(C)=CCCC(C)=CCCC(C)=CCC12OC1C(=O)C(COC(=O)CC(C)(O)CC(=O)O)=CC2=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][O][C@@H1][Branch2][Branch1][N][O][C][=C][C][Branch1][C][O][=C][C][=Branch1][C][=O][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][N][C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][O][C][Ring2][Ring1][#Branch2][=C][Ring2][Ring1][#C][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Ring2][Ring2][Branch2][O]

The molecule is a kaempferol O-glucoside that is kaempferol attached to a beta-D-glucopyranosyl residue at position 3 and a alpha-L-rhamnopyranosyl residue at position 7 via glycosidic linkages. Isolated from the aerial parts of Vicia faba and Lotus edulis, it exhibits inhibitory activity against topoisomerase I and II. It has a role as an EC 5.99.1.2 (DNA topoisomerase) inhibitor, an EC 5.99.1.3 [DNA topoisomerase (ATP-hydrolysing)] inhibitor and a plant metabolite. It is an alpha-L-rhamnoside, a dihydroxyflavone and a kaempferol O-glucoside.

SMILES: CC1OC(Oc2cc(O)c3c(=O)c(OC4OC(CO)C(O)C(O)C4O)c(-c4ccc(O)cc4)oc3c2)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][=Branch1][C][=O][N][C@@H1][C@@H1][Branch2][Ring2][#C][O][C@@H1][O][C@H1][Branch1][Ring1][C][O][C@H1][Branch1][C][O][C@H1][Branch2][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][N][C][Branch1][C][C][=O][C@H1][Ring2][Ring1][Branch2][O][C@H1][Branch1][C][O][C@@H1][Branch1][Ring1][C][O][O][C@H1][Ring2][Ring2][Ring1][O]

The molecule is an amino trisaccharide consisting of 2-acetamido-2-deoxy-alpha-D-galactopyranose, beta-D-galactopyranose and 2-acetamido-2-deoxy-beta-D-glucopyranose residu joined in sequence by (1->3) glycosidic bonds. It is an amino trisaccharide, a member of acetamides and a glucosamine oligosaccharide. It derives from an alpha-D-GalpNAc-(1->3)-beta-D-Galp and a beta-D-Galp-(1->3)-beta-D-GlcpNAc.

SMILES: CC(=O)NC1C(OC2C(O)C(CO)OC(OC3C(O)C(CO)OC(O)C3NC(C)=O)C2O)OC(CO)C(O)C1O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

[S][=C][C][=C][C][=C][NH1][Ring1][=Branch1]

The molecule is pyridine substituted at C-2 by a sulfanyl group. It has a role as a fluorescence quencher and an allergen. It is a member of pyridines and an aryl thiol.

SMILES: S=c1cccc[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>

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

The molecule is a fatty acid derivative consisting of valeric acid substituted at C-5 with an N-(1-phenylcyclohexyl)amino group. It has a role as a metabolite. It is a fatty acid derivative and a secondary amino compound. It derives from a valeric acid.

SMILES: O=C(O)CCCCNC1(c2ccccc2)CCCCC1
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][C][=O][C][C@H1][Ring1][#Branch1][C][C][C@@H1][C@@H1][Ring1][O][C][C][C@][Branch1][C][C][C@H1][Branch1][C][O][C][C][C@@H1][Ring1][O][Ring1][#Branch1]

The molecule is an androstanoid with a 5beta-configuration formed by reduction across the C4-C5 double bond of epitestosterone. It has a role as a human xenobiotic metabolite. It is a 17alpha-hydroxy steroid, an androstanoid and a 3-oxo-5beta-steroid.

SMILES: CC12CCC3C(CCC4CC(=O)CCC43C)C1CCC2O
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][Ring1][C][O][N][C][=Branch1][C][=O][C@@H1][C][C][C][N][Ring1][Branch1]

The molecule is a dipeptide formed from L-proline and L-serine residues. It has a role as a metabolite. It derives from a L-proline and a L-serine.

SMILES: O=C(O)C(CO)NC(=O)C1CCCN1
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].[O].[O].[O].[O].[O].[O].[O][=S][=Branch1][C][=O][Branch1][C][O-1][O-1].[Zn+2]

The molecule is a hydrate that is the heptahydrate form of zinc sulfate. It is a hydrate and a metal sulfate. It contains a zinc sulfate.

SMILES: O.O.O.O.O.O.O.O=S(=O)([O-])[O-].[Zn+2]
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].[O].[O].[O].[O][=P][Branch1][C][O-1][Branch1][C][O][C][Branch1][C][Cl][Branch1][C][Cl][P][=Branch1][C][=O][Branch1][C][O-1][O].[Na+1].[Na+1]

The molecule is the tetrahydrate of the disodium salt of clodronic acid. It inhibits bone resorption and soft tissue calcification, and is used as an adjunct in the treatment of severe hypercalcaemia associated with malignancy, and in the management of osteolytic lesions and bone pain associated with skeletal metastases. It has a role as a bone density conservation agent. It is a hydrate and a one-carbon compound. It contains a clodronic acid disodium salt.

SMILES: O.O.O.O.O=P([O-])(O)C(Cl)(Cl)P(=O)([O-])O.[Na+].[Na+]
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@@H1][Branch2][Ring1][#Branch1][C][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]

The molecule is a dipeptide obtained by formal condensation of the gamma-carboxy group of glutamic acid with the amino group of another glutamic acid. It has a role as a human metabolite. It derives from a L-glutamic acid. It is a conjugate acid of a gamma-Glu-Glu(2-).

SMILES: NC(CCC(=O)NC(CCC(=O)O)C(=O)O)C(=O)O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

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

The molecule is a 1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol)(1-) in which both acyl groups are specified as oleoyl. It is a 1,2-diacyl-sn-glycero-3-phospho-(1'-sn-glycerol)(1-) and a phosphatidylglycerol 36:2(1-). It is a conjugate base of a 1,2-dioleoyl-sn-glycero-3-phospho-(1'-sn-glycerol).

SMILES: CCCCCCCCC=CCCCCCCCC(=O)OCC(COP(=O)([O-])OCC(O)CO)OC(=O)CCCCCCCC=CCCCCCCCC
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>

[Cl][Pt+2][Cl].[N].[N]

The molecule is a diamminedichloroplatinum compound in which the two ammine ligands and two chloro ligands are oriented in a cis planar configuration around the central platinum ion. An anticancer drug that interacts with, and forms cross-links between, DNA and proteins, it is used as a neoplasm inhibitor to treat solid tumours, primarily of the testis and ovary. Commonly but incorrectly described as an alkylating agent due to its mechanism of action (but it lacks alkyl groups). It has a role as an antineoplastic agent, a photosensitizing agent, a cross-linking reagent, a genotoxin, a nephrotoxin and a mutagen.

SMILES: Cl[Pt+2]Cl.N.N
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

Please provide a step-by-step analysis explaining how you interpret the molecular structure, identify key features and functional groups, and summarize it into a clear and informative description.

Think step by step, and your final answer **must** be returned in the format: <answer> ... </answer>. For example:
<answer>The molecule is an epoxy(hydroxy)icosatrienoate that is the conjugate base of 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of an 11-hydroxy-(14R,15S)-epoxy-(5Z,8Z,12E)-icosatrienoic acid.</answer>

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

The molecule is a citronellic acid that has (S)-configuration. It is a conjugate acid of a (S)-citronellate. It is an enantiomer of a (R)-citronellic acid.

SMILES: CC(C)=CCCC(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][=Branch1][C][=O][/C][=C][/C@@H1][C@H1][C][/C][=Branch1][#Branch2][=C][/C][C][C][C][=Branch1][C][=O][O][O][C@H1][Ring1][N][C][C@H1][Ring1][#C][O]

The molecule is a prostaglandins I. It derives from a prostaglandin I2. It is a conjugate acid of a 15-dehydro-prostaglandin I2(1-).

SMILES: CCCCCC(=O)C=CC1C(O)CC2OC(=CCCCC(=O)O)CC21
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][=Branch1][C][=O][C@@H1][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Branch1][C][O][C][O]

The molecule is a keto-D-gluconate that is the conjugate base of 2-dehydro-D-gluconic acid, obtained by deprotonation of the carboxy group. It is a 2-oxo monocarboxylic acid anion and a keto-D-gluconate. It derives from a D-gluconate. It is a conjugate base of a 2-dehydro-D-gluconic acid.

SMILES: O=C([O-])C(=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>

[C][C][=C][/C][=Branch2][Ring2][#Branch2][=C][Branch2][Ring1][=Branch1][\C][=C][C][Branch1][C][C][=C][Branch1][C][O][C][Branch1][=Branch1][C][=Branch1][C][=O][O][=C][Ring1][O][C][=C][C][=C][C][=C][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][O][C][=C][Branch1][=Branch1][C][=Branch1][C][=O][O][C][Ring2][Ring1][#C][=O]

The molecule is a member of the class of benzoic acids that is 2-hydroxy-3-methyl-5-[(2-sulfophenyl)methyl]benzoic acid in which both of the benzylic hydrogens are replaced by a 3-carboxy-5-methyl-4-oxocyclohexa-2,5-dien-1-ylidene group. The trisodium salt is the biological stain 'chromoxane cyanin R'. It has a role as a histological dye. It is a monohydroxybenzoic acid, an arenesulfonic acid and a member of quinomethanes. It is a conjugate acid of a chromoxane cyanin R(3-).

SMILES: CC1=CC(=C(c2cc(C)c(O)c(C(=O)O)c2)c2ccccc2S(=O)(=O)O)C=C(C(=O)O)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][=Branch1][C][=O][O][C][Branch1][C][C][C][=O]

The molecule is an aldehyde that is propanal substituted by an acetoxy group at position 2. It has a role as a metabolite. It is an aldehyde and an acetate ester.

SMILES: CC(=O)OC(C)C=O