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

The molecule is an N-acetyl-amino acid that is tyrosine with an amine hydrogen substituted by an acetyl group. It has a role as a human urinary metabolite. It is a tyrosine derivative, a N-acetyl-amino acid and a member of phenols. It derives from a tyrosine.

SMILES: CC(=O)NC(Cc1ccc(O)cc1)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][S][=Branch1][C][=O][=Branch1][C][=O][C][=C][C][=C][Branch1][P][C][=Branch1][C][=O][C][C][=Branch1][C][=O][C][C][C][C][Ring1][#Branch1][=O][C][Branch1][C][Cl][=C][Ring1][P]

The molecule is an aromatic ketone that is cyclohexane-1,3-dione substituted by a 2-chloro-4-(methylsulfonyl)benzoyl group at position 2. It has a role as an environmental contaminant, a xenobiotic, a herbicide and a carotenoid biosynthesis inhibitor. It is an aromatic ketone, a sulfone, a member of cyclohexanones and a beta-triketone.

SMILES: CS(=O)(=O)c1ccc(C(=O)C2C(=O)CCCC2=O)c(Cl)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>

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

The molecule is a glycophytoceramide having a 4-O-(4-methylbenzyl)-alpha-D-galactosyl residue at the O-1 position and a hexacosanoyl group attached to the nitrogen. One of a series of an extensive set of 4"-O-alkylated alpha-GalCer analogues evaluated (PMID:30556652) as invariant natural killer T-cell (iNKT) antigens. It derives from an alpha-D-galactose.

SMILES: CCCCCCCCCCCCCCCCCCCCCCCCCC(=O)NC(COC1OC(CO)C(OCc2ccc(C)cc2)C(O)C1O)C(O)C(O)CCCCCCCCCCCCCC
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

[NH3+1][C][C][C][NH2+1][C][C][C][C][NH1+1][Branch1][Branch1][C][C][C][NH3+1][C][C][C][NH3+1]

The molecule is an organic cation obtained by protonation of the five amino groups of N(4)-aminopropylspermine. It has a role as a bacterial metabolite. It is an ammonium ion derivative and an organic cation. It is a conjugate base of a N(4)-aminopropylspermine.

SMILES: [NH3+]CCC[NH2+]CCCC[NH+](CCC[NH3+])CCC[NH3+]
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][=Branch2][C][C][C][C][=Branch1][C][=O][O-1][O][O]

The molecule is conjugate base of 5(S)-HPETE arising from deprotonation of the carboxylic acid function. It has a role as a human metabolite. It is a conjugate base of a 5(S)-HPETE.

SMILES: CCCCCC=CCC=CCC=CC=CC(CCCC(=O)[O-])OO
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@H1][O][C@@H1][O][C@@][Branch1][C][C][C][C][C@H1][C@H1][Branch1][C][C][C][C][C@@H1][Branch1][Branch1][C@H1][Ring1][#C][C][C@@][Ring1][#C][Ring1][=Branch2][O][O][Ring1][#C]

The molecule is an artemisinin derivative that is artemisinin in which the lactone has been converted to the corresponding lactol methyl ether. It is used in combination with lumefantrine as an antimalarial for the treatment of multi-drug resistant strains of falciparum malaria. It has a role as an antimalarial. It is a sesquiterpenoid, a cyclic acetal, an organic peroxide, an artemisinin derivative and a semisynthetic derivative.

SMILES: COC1OC2OC3(C)CCC4C(C)CCC(C1C)C24OO3
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][#Branch1][Branch1][/C][=C][/C][=Branch1][C][=O][O][C][C@H1][O][C][Branch2][Branch1][#Branch2][O][C][=C][C][O][C][Branch1][#C][C][=C][C][=C][Branch1][C][O][C][Branch1][C][O][=C][Ring1][Branch2][=C][C][=Branch1][C][=O][C][=Ring1][#C][C][Branch1][C][O][=C][Ring2][Ring1][Ring2][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][Branch1][C][O][C@@H1][Ring2][Ring2][Branch2][O][=C][C][=C][Ring2][Branch1][Branch1][O]

The molecule is a C-glycosyl compound that is isoorientin in which the hydroxyl hydrogen at position 7 is replaced by a 6-feruloylglucosyl residue. It has a role as a metabolite. It is a trihydroxyflavone, a C-glycosyl compound, a cinnamate ester and a glycosyloxyflavone. It derives from an isoorientin and a ferulic acid.

SMILES: COc1cc(C=CC(=O)OCC2OC(Oc3cc4oc(-c5ccc(O)c(O)c5)cc(=O)c4c(O)c3C3OC(CO)C(O)C(O)C3O)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@@H1][O][C@@H1][Branch1][P][O][C@H1][Branch1][Ring1][C][O][C@@H1][Branch1][C][O][C@@H1][Branch1][C][O][C][O][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][Ring2][Ring1][=N][O]

The molecule is a glycoside comprising glucose in (1->3) linkage with rhamnose, in turn linked (1->4) to D-ribitol. It has a role as a hapten. It is a glycoside and a trisaccharide. It derives from a ribitol.

SMILES: CC1OC(OC(CO)C(O)C(O)CO)C(O)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][C][=Branch1][C][=O][C@H1][Branch1][C][N][C][=Branch1][C][=O][O]

The molecule is a 2-amino-3-oxobutanoic acid and a non-proteinogenic L-alpha-amino acid. It has a role as a human metabolite and a Saccharomyces cerevisiae metabolite. It is a conjugate acid of a L-2-amino-3-oxobutanoate. It is a tautomer of a L-2-amino-3-oxobutanoic acid zwitterion.

SMILES: CC(=O)C(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][O][C][=Branch1][C][=O][N][C@@H1][C][C][C@@H1][C@@H1][Branch1][Ring2][C][Ring1][=Branch1][C][C@H1][C][=Branch1][C][=O][O][C@H1][Branch1][C][C][C@H1][Ring1][#Branch1][C@H1][Ring1][N][/C][=C][/C][=C][C][=C][Branch1][N][C][=C][C][=C][C][Branch1][C][F][=C][Ring1][#Branch1][C][=NH1+1][Ring1][=N]

The molecule is a pyridinium ion obtained by protonation of the pyridine nitrogen in vorapaxar. It is a conjugate acid of a vorapaxar.

SMILES: CCOC(=O)NC1CCC2C(C1)CC1C(=O)OC(C)C1C2C=Cc1ccc(-c2cccc(F)c2)c[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][C][C][=Branch1][C][=O][O][C@H1][C][C][C@@][Branch1][C][C][C][=Branch2][Ring2][Branch1][=C][C][C@H1][C@@H1][C][C][C@H1][Branch1][=N][C@H1][Branch1][C][C][C][C][C][C][Branch1][C][C][C][C@@][Ring1][=N][Branch1][C][C][C][C][C@@H1][Ring2][Ring1][C][Ring2][Ring1][#Branch1][C][Ring2][Ring1][O]

The molecule is the (9Z,12Z)-stereoisomer of cholesteryl octadeca-9,12-dienoate. It has a role as a human metabolite and a mouse metabolite. It derives from a linoleic acid.

SMILES: CCCCCC=CCC=CCCCCCCCC(=O)OC1CCC2(C)C(=CCC3C2CCC2(C)C(C(C)CCCC(C)C)CCC32)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][Branch1][C][O][C][Branch1][C][O][C][=C][C][=C][C][=C][Ring1][=Branch1]

The molecule is a 2-hydroxy monocarboxylic acid that is acetic acid in which two of the methyl hydrogens are substituted by phenyl and hydroxyl groups. It has a role as an antibacterial agent and a human xenobiotic metabolite. It is a 2-hydroxy monocarboxylic acid and a member of benzenes. It derives from an acetic acid. It is a conjugate acid of a mandelate.

SMILES: O=C(O)C(O)c1ccccc1
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][#Branch1][N][C][Branch1][C][C][=O][C][Branch1][C][O][O][C@@H1][Ring1][N][C][O][O][C@H1][Branch1][Ring1][C][O][C@H1][Branch1][C][O][C@@H1][Ring2][Ring1][Branch2][O][C@@H1][O][C@@H1][Branch1][C][C][C@@H1][Branch1][C][O][C@@H1][Branch1][C][O][C@@H1][Ring1][=Branch2][O]

The molecule is a linear amino trisaccharide consisting of alpha-L-fucose,N-acetyl-beta-D-galactosamine and N-acetyl-D-glucosamine residues joined in sequence by (1->3)- and (1->4)-linkages respectively. It has a role as an epitope. It is an amino trisaccharide and a glucosamine oligosaccharide.

SMILES: CC(=O)NC1C(O)OC(CO)C(OC2OC(CO)C(O)C(OC3OC(C)C(O)C(O)C3O)C2NC(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][Branch1][O][C][#C][C][=C][C][=C][C][=C][Ring1][=Branch1][=NH1+1][Ring1][=C]

The molecule is a pyridinium ion that is the conjugate acid of 2-methyl-6-(phenylethynyl)pyridine, arising from protonation of the pyridine nitrogen. It is a conjugate acid of a 2-methyl-6-(phenylethynyl)pyridine.

SMILES: Cc1cccc(C#Cc2ccccc2)[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][C@@H1][Branch1][C][O][C@@H1][O][C][Branch1][C][O][C@H1][Branch1][C][O][C@H1][Ring1][#Branch1][O][C@H1][O][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]

The molecule is a galactotriose consisting of two alpha-D-galactopyranosyl groups and a D-galactofuranose group linked in sequence by (1->4) and (1->3) glycosidic bonds.

SMILES: OCC(O)C1OC(O)C(O)C1OC1OC(CO)C(OC2OC(CO)C(O)C(O)C2O)C(O)C1O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is an arenecarbaldehyde that consists of benzene bearing a single formyl substituent; the simplest aromatic aldehyde and parent of the class of benzaldehydes. It has a role as a flavouring agent, a fragrance, an odorant receptor agonist, a plant metabolite, an EC 3.5.5.1 (nitrilase) inhibitor and an EC 3.1.1.3 (triacylglycerol lipase) inhibitor.

SMILES: O=Cc1ccccc1
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@@H1][O][C@@H1][Ring1][Ring1][C]

The molecule is an epoxide that is oxirane substituted by a methyl and a propyl group at positions 2 and 3 respectively. Metabolite observed in cancer metabolism. It has a role as a human metabolite.

SMILES: CCCC1OC1C
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][=N][C][C][=Branch1][C][=O][NH1][C][=Branch1][C][=O][NH1][C][=Ring1][Branch2][NH1][Ring1][N]

The molecule is a member of the class of pteridines that is pteridine in which the hydrogens at positions 2, 4, and 7 have been replaed by hydroxy groups. It is a member of pteridines and a heteroaryl hydroxy compound.

SMILES: O=c1cnc2c(=O)[nH]c(=O)[nH]c2[nH]1