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

The molecule is a heterodetic cyclic peptide comprising a cyclopentapeptide made up from L-seryl, L-tyrosyl, L-phenylalanyl, L-isoleucyl and L-methoionyl residues and cyclised by formation of an ester bond between the carboxy group of the methionyl residue and the side-chain hydroxy group of the seryl residue. In addition, the exocyclic amino group is acylated by an L-cysteinylamino)ethoxy]ethoxy}acetyl)-L-tyrosyl-L-seryl-L-threonyl group. It has a role as a hapten.

SMILES: CCC(C)C1NC(=O)C(Cc2ccccc2)NC(=O)C(Cc2ccc(O)cc2)NC(=O)C(NC(=O)C(NC(=O)C(CO)NC(=O)C(Cc2ccc(O)cc2)NC(=O)COCCOCCNC(=O)C(N)CS)C(C)O)COC(=O)C(CCSC)NC1=O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

[C][C][C][C][C][/C][=C][\C][/C][=C][\C][/C][=C][\C][/C][=C][\C][C][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@H1][Branch1][C][NH3+1][C][=Branch1][C][=O][O-1]

The molecule is an 1-acyl-sn-glycero-3-phosphoserine(1-) in which the 1-acyl group is specified as arachidonoyl. It derives from an arachidonic acid. It is a conjugate base of a 1-arachidonoyl-sn-glycero-3-phospho-L-serine.

SMILES: CCCCCC=CCC=CCC=CCC=CCCCC(=O)OCC(O)COP(=O)([O-])OCC([NH3+])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][O][C][=C][Branch1][C][O][C][=C][Branch2][Ring1][C][C@@H1][C][C][C][=C][C][=C][Branch1][C][O][C][=C][Ring1][#Branch1][O][Ring1][O][C][=C][Ring2][Ring1][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]

The molecule is a flavan glycoside that is (2S)-flavan substituted by a methoxy group at position 4', hydroxy groups at positions 7 and 5' and a beta-D-glucopyranosyloxy group at position 3 respectively. It has a role as a plant metabolite. It is a hydroxyflavan, a methoxyflavan, a beta-D-glucoside, a monosaccharide derivative and a flavan glycoside. It derives from a (2S)-flavan.

SMILES: COc1c(O)cc(C2CCc3ccc(O)cc3O2)cc1OC1OC(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>

[N][C][C][C][C][C@H1][Branch1][C][N][C][=Branch1][C][=O][N][C@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][O]

The molecule is a dipeptide obtained by formal condensation of the carboxy group of L-lysine with the amino group of D-glutamic acid. It is a constituent of bacterial peptidoglycan type A4alpha. It derives from a L-lysine and a D-glutamic acid.

SMILES: NCCCCC(N)C(=O)NC(CCC(=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][=Branch1][C][=O][C][C][C][C][=Branch1][C][=O][O]

The molecule is an icosanoid that is (6E,8Z,11Z,14Z,17Z)-icosapentaenoic acid carrying an oxo substituent at position 5. An intermediate of specialised proresolving mediators. It is an enone, an icosanoid, a long-chain fatty acid, an oxo fatty acid and a polyunsaturated fatty acid. It derives from an all-cis-5,8,11,14,17-icosapentaenoic acid. It is a conjugate acid of a (6E,8Z,11Z,14Z,17Z)-5-oxoicosapentaenoate.

SMILES: CCC=CCC=CCC=CCC=CC=CC(=O)CCCC(=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>

[O][=C][Branch1][C][O][C@@H1][C][C][Branch1][C][O][C][N][Ring1][=Branch1]

The molecule is the L-stereoisomer of 4-hydroxyproline. It is a 4-hydroxyproline, a L-proline derivative and a non-proteinogenic L-alpha-amino acid. It is a conjugate acid of a 4-hydroxy-L-prolinate. It is an enantiomer of a 4-hydroxy-D-proline. It is a tautomer of a 4-hydroxy-L-proline zwitterion.

SMILES: O=C(O)C1CC(O)CN1
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][=Branch1][C][=O][=Branch1][C][=O][C][C][C@H1][Branch1][C][N][C][=Branch1][C][=O][O]

The molecule is an L-methionine derivative in which the sulfur has been oxidised to the corresponding sulfone. It has a role as an animal metabolite. It is a L-methionine derivative, a non-proteinogenic L-alpha-amino acid and a methionine sulfone. It is a tautomer of a methionine sulfone zwitterion.

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

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

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

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

The molecule is an aromatic ether in which the oxygen is attached to two phenyl substituents. It has been found in muscat grapes and vanilla. It has a role as a plant metabolite.

SMILES: c1ccc(Oc2ccccc2)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@H1][Branch1][C][O][C][C][Ring1][#Branch1][=C][C][C@@H1][C@@H1][Ring1][O][C][C][C@][Branch1][C][C][C][=Branch1][C][=O][C@H1][Branch1][C][O][C][C@@H1][Ring1][N][Ring1][Branch2]

The molecule is a 16alpha-hydroxy steroid, a 17-oxo steroid, an androstanoid, a 3beta-hydroxy-Delta(5)-steroid and a secondary alpha-hydroxy ketone. It has a role as a human metabolite and a mouse metabolite.

SMILES: CC12CCC3C(CC=C4CC(O)CCC43C)C1CC(O)C2=O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is a very long-chain fatty acid that is lignoceric acid bearing an (R)-2-hydroxy substituent. It is a 2-hydroxy fatty acid and a very long-chain fatty acid. It derives from a tetracosanoic acid. It is a conjugate acid of a (R)-2-hydroxylignocerate.

SMILES: CCCCCCCCCCCCCCCCCCCCCCC(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][Branch1][=Branch1][C][=Branch1][C][=O][O][=C][Ring1][=Branch2]

The molecule is a methylbenzoic acid carrying a methyl substituent at position 3. It has a role as a human xenobiotic metabolite. It is a conjugate acid of a m-toluate.

SMILES: Cc1cccc(C(=O)O)c1
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is a gamma-lactone that is 1,3-dihydro-2-benzofuran in which the hydrogens at position 1 are replaced by an oxo group. It is a gamma-lactone and a member of 2-benzofurans.

SMILES: O=C1OCc2ccccc21
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][Branch2][Ring1][=Branch1][N][C][=Branch1][C][=O][C@H1][Branch1][#Branch1][C][C][C][C][Ring1][Ring1][N][C][=Branch1][C][=O][C][N][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][N][C@@H1][Branch1][#Branch2][C][C][C][C][C][C][C][Ring1][=Branch1][C][=Branch1][C][=O][N][C@@H1][Branch2][Ring1][N][C][C][C@H1][Branch1][Ring1][C][N][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][N][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch2][C][C][C][Branch1][C][N][=O][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][N][C][C][C][C@H1][Ring1][Branch1][C][=Branch1][C][=O][N][C@@H1][Branch1][=Branch1][C][C][C][C][N][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Branch2][C][C][C][=Branch1][C][=O][O][C][=Branch1][C][=O][N][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][C@@H1][Branch1][C][C][O]

The molecule is a fifteen-membered glycopeptide comprising glycyl, cyclopropylalanyl, alanyl, glycyl, cyclohexylalanyl, (5R)-5-(beta-D-galactopyranosyloxy)lysyl, glycyl. alpha-glutamyl, glutaminyl, glycyl, prolyl, lysyl, glycyl, alpha-glutamyl and threonine residues coupled in sequence.

SMILES: CC(NC(=O)C(CC1CC1)NC(=O)CN)C(=O)NCC(=O)NC(CC1CCCCC1)C(=O)NC(CCC(CN)OC1OC(CO)C(O)C(O)C1O)C(=O)NCC(=O)NC(CCC(=O)O)C(=O)NC(CCC(N)=O)C(=O)NCC(=O)N1CCCC1C(=O)NC(CCCCN)C(=O)NCC(=O)NC(CCC(=O)O)C(=O)NC(C(=O)O)C(C)O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is the D-enantiomer of aspartic acid. It has a role as a mouse metabolite. It is an aspartic acid and a D-alpha-amino acid. It is a conjugate acid of a D-aspartate(1-). It is an enantiomer of a L-aspartic acid.

SMILES: NC(CC(=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>

[O][C][C][=C][C@H1][Branch2][Ring2][#Branch2][N][C@H1][C][C@H1][Branch1][Ring1][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][C][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 member of the class of validamycins that is (1R,2S,3S,4S,6R)-4-amino-6-(hydroxymethyl)cyclohexane-1,2,3-triol in which the hydroxy group at position 1 has been converted to its beta-D-glucoside and in which one of the hydrogens attached to the nitrogen is replaced by a (1R,4R,5R,6S)-4,5,6-trihydroxy-3-(hydroxymethyl)cyclohex-2-en-1-yl group. It is the major validamycin produced by Streptomyces hygroscopicus. It has a role as an EC 2.4.1.231 [alpha,alpha-trehalose phosphorylase (configuration-retaining)] inhibitor, an EC 2.4.1.64 (alpha,alpha-trehalose phosphorylase) inhibitor, an EC 3.2.1.28 (alpha,alpha-trehalase) inhibitor and an antifungal agrochemical. It is a member of validamycins, a secondary amino compound, a polyol and an antibiotic fungicide. It is a conjugate base of a validamycin A(1+).

SMILES: OCC1=CC(NC2CC(CO)C(OC3OC(CO)C(O)C(O)C3O)C(O)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][C][C][C][C][C][C][C][C][C][C][/C][=C][/C@@H1][Branch1][C][O][C@H1][Branch1][O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][N][C][=Branch1][C][=O][C][C][C][C][C][C][C]

The molecule is an N-acylsphingosine 1-phosphate(2-) in which the N-acyl group is specified as octanoyl; major species at pH 7.3. It is a conjugate base of a N-octanoylsphingosine 1-phosphate.

SMILES: CCCCCCCCCCCCCC=CC(O)C(COP(=O)([O-])[O-])NC(=O)CCCCCCC
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is a lignan that consists of 1,2,3,4-tetrahydronaphthalene substituted by a hydroxy group at position 7, hydroxymethyl groups at positions 2 and 3, a methoxy group at position 6 and a 3,4-dihydroxyphenyl group at position 1. It has been isolated from Taxus yunnanensis. It has a role as a plant metabolite. It is a lignan, a pentol, a polyphenol and a primary alcohol.

SMILES: COc1cc2c(cc1O)C(c1ccc(O)c(O)c1)C(CO)C(CO)C2