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

The molecule is an organic heterotetracyclic compound that is 3H-chromeno[6,5-b][1]benzoxepine substituted by geminal methyl groups at position 3, a single methyl group at position 5 and hydroxy groups at positions 6 and 11. It is isolated from the roots of Bauhinia saccocalyx and exhibits antimycobacterial activity. It has a role as a metabolite and an antimycobacterial drug. It is a polyphenol, a cyclic ether and an organic heterotetracyclic compound.

SMILES: Cc1c(O)c2c(c3c1OC(C)(C)C=C3)C=Cc1c(O)cccc1O2
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][O]

The molecule is a hexenoic acid with the double bond at position 3. It has a role as a plant metabolite.

SMILES: CCC=CCC(=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@@H1][O][C@@H1][Branch2][Branch2][#Branch2][O][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][S][C][C][N][C][=Branch1][C][=O][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][C][O][C][Branch1][C][C][Branch1][C][C][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1][C@H1][Branch1][C][O][C][C@H1][Ring2][=Branch1][N][O]

The molecule is an acyl-CoA(4-) obtained by deprotonation of the phosphate and diphosphate groups of oscr#34-CoA; major species at pH 7.3. It is a conjugate base of an oscr#34-CoA.

SMILES: CC1OC(OCCCCCCCCCCCCCCCCCCC(=O)SCCNC(=O)CCNC(=O)C(O)C(C)(C)COP(=O)([O-])OP(=O)([O-])OCC2OC(n3cnc4c(N)ncnc43)C(O)C2OP(=O)([O-])[O-])C(O)CC1O
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][O][C][C][=Branch1][C][=O][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]

The molecule is a 1-alkylglycerone 3-phosphate(2-) obtained by deprotonation of the phosphate OH groups of 1-octadecylglycerone 3-phosphate; major species at pH 7.3. It is a conjugate base of a 1-octadecylglycerone 3-phosphate.

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

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

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

[C][C][C][C][C][C][C][Branch1][C][C][C][C][=Branch1][C][=O][S][C][C][N][C][=Branch1][C][=O][C][C][N][C][=Branch1][C][=O][C@H1][Branch1][C][O][C][Branch1][C][C][Branch1][C][C][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O][P][=Branch1][C][=O][Branch1][C][O-1][O-1]

The molecule is a medium chain fatty acyl-CoA(4-) arising from deprotonation of the phosphate and diphosphate functions of 3-methylnonanoyl-CoA; major species at pH 7.3. It is a medium-chain fatty acyl-CoA(4-) and a saturated fatty acyl-CoA(4-). It is a conjugate base of a 3-methylnonanoyl-CoA.

SMILES: CCCCCCC(C)CC(=O)SCCNC(=O)CCNC(=O)C(O)C(C)(C)COP(=O)([O-])OP(=O)([O-])OCC1OC(n2cnc3c(N)ncnc32)C(O)C1OP(=O)([O-])[O-]
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

[N][C][Branch2][Branch1][P][N][C@H1][O][C@H1][Branch2][Ring2][P][C][O][P][=Branch1][C][=O][Branch1][C][O-1][O][P][=Branch1][C][=O][Branch1][C][O-1][O][C][C@H1][O][C@@H1][Branch1][P][N][C][=N][C][=C][Branch1][C][N][N][=C][N][=C][Ring1][#Branch1][Ring1][#Branch2][C@H1][Branch1][C][O][C@@H1][Ring1][S][O][C@@H1][Branch1][C][O][C@H1][Ring2][Ring2][C][O][=NH1+1][C][C][C][C@H1][Branch1][C][NH3+1][C][=Branch1][C][=O][O-1]

The molecule is a nucleotide-sugar oxoanion that is the conjugate base of N(omega)-(ADP-D-ribosyl)-L-arginine; major species at pH 7.3. It is a conjugate base of a N(omega)-(ADP-D-ribosyl)-L-arginine.

SMILES: NC(NC1OC(COP(=O)([O-])OP(=O)([O-])OCC2OC(n3cnc4c(N)ncnc43)C(O)C2O)C(O)C1O)=[NH+]CCCC([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>

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

The molecule is a monocarboxylic acid anion obtained by deprotonation of the carboxy and sulfino groups of 3-sulfinopropionic acid. Major microspecies at pH 7.3 It is an organosulfinate oxoanion and a monocarboxylic acid anion. It is a conjugate base of a 3-sulfinopropionic acid.

SMILES: O=C([O-])CCS(=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][C][C][C][C][C][Branch1][C][C][Branch1][C][O][C][=Branch1][C][=O][C][Ring1][=Branch2]

The molecule is a limonene monoterpenoid that consists of cyclohexanone bearing hydroxy and methyl substituents at position 2 as well as an isopropenyl substituent at position 5. It is a limonene monoterpenoid and a tertiary alpha-hydroxy ketone.

SMILES: C=C(C)C1CCC(C)(O)C(=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>

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

The molecule is the hydrobromide salt of fenoterol. A beta2-adrenergic agonist, it is used as a bronchodilator in the management of reversible airway obstruction. It has a role as a bronchodilator agent, a beta-adrenergic agonist and a sympathomimetic agent. It contains a fenoterol.

SMILES: Br.CC(Cc1ccc(O)cc1)NCC(O)c1cc(O)cc(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>

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

The molecule is a eudesmane sesquiterpenoid in which the eudesmane skeleton carries a hydroxy substituent at C-11 and has a double bond between C-3 and C-4. It has a role as a plant metabolite and a volatile oil component. It is a eudesmane sesquiterpenoid, a member of octahydronaphthalenes and a tertiary alcohol.

SMILES: CC1=CCCC2(C)CCC(C(C)(C)O)CC12
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

[C][C][=C][N][=C][Branch2][Ring2][=Branch2][C][=Branch1][C][=O][N][C][C][C][=C][C][=C][Branch2][Ring1][=Branch1][S][=Branch1][C][=O][=Branch1][C][=O][N][C][=Branch1][C][=O][N][C][C][C][C][C][C][Ring1][=Branch1][C][=C][Ring2][Ring1][Ring1][C][=N][Ring2][Ring1][=C]

The molecule is an N-sulfonylurea that is glyburide in which the (5-chloro-2-methoxybenzoyl group is replaced by a (5-methylpyrazin-2-yl)carbonyl group. An oral hypoglycemic agent, it is used in the treatment of type 2 diabetes mellitus. It has a role as a hypoglycemic agent, an EC 2.7.1.33 (pantothenate kinase) inhibitor and an insulin secretagogue. It is a N-sulfonylurea, a member of pyrazines, an aromatic amide and a monocarboxylic acid amide.

SMILES: Cc1cnc(C(=O)NCCc2ccc(S(=O)(=O)NC(=O)NC3CCCCC3)cc2)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][O][C][Branch1][C][C][Branch1][C][C][/C][=C][/C][C@@H1][Branch1][C][C][C][C][C][C@@][Branch1][C][C][C][=C][Branch1][=Branch2][C][C][C@][Ring1][#Branch2][Ring1][#Branch1][C][C@@][Branch1][C][C][C][C][C@H1][Branch1][C][O][C][Branch1][C][C][Branch1][C][C][C@@H1][Ring1][#Branch2][C][C][Ring2][Ring1][C]

The molecule is a 3beta-hydroxy steroid that is (3beta,5alpha)-4,4,14-trimethylandrost-8-en-3-ol which is substituted by a (3E,6S)-2-methoxy-2-methylhept-3-en-6-yl group at position 17. It has a role as an antifungal agent and a fungal metabolite. It is a tetracyclic triterpenoid, a 3beta-hydroxy steroid and an ether. It derives from a hydride of a lanostane.

SMILES: COC(C)(C)C=CCC(C)C1CCC2(C)C3=C(CCC12C)C1(C)CCC(O)C(C)(C)C1CC3
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is a pyrrolizine alkaloid that is jacoline in which the secondary hydroxy group has been replaced by a chlorine and the 5-methyl group has been replaced by methylene. It has a role as a Jacobaea metabolite. It is a diol, a macrocyclic lactone, an organic heterotricyclic compound, an organochlorine compound, a pyrrolizine alkaloid and a tertiary amino compound. It derives from a jacoline.

SMILES: C=C1CC(O)(C(C)Cl)C(=O)OC2CCN3CC=C(COC(=O)C1(C)O)C23
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][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][C][=C][Branch1][C][O][C][=C][Branch1][N][C][Branch1][C][O][=C][Ring1][Branch2][C][Ring1][=N][=O][C][C@@][Branch1][C][O][Branch1][#Branch1][C][=Branch1][C][=O][C][O][C][C@@H1][Ring1][S][O][C@H1][C][C@H1][Branch1][C][N][C@H1][Branch1][C][O][C@H1][Branch1][C][C][O][Ring1][=Branch2]

The molecule is a deoxy hexoside, an anthracycline, an anthracycline antibiotic, an aminoglycoside, a member of tetracenequinones, a member of p-quinones, a primary alpha-hydroxy ketone and a tertiary alpha-hydroxy ketone. It has a role as an Escherichia coli metabolite. It is a conjugate base of a doxorubicin(1+). It derives from a hydride of a tetracene.

SMILES: COc1cccc2c1C(=O)c1c(O)c3c(c(O)c1C2=O)CC(O)(C(=O)CO)CC3OC1CC(N)C(O)C(C)O1
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][=P][Branch1][C][O-1][Branch1][C][O-1][O][C][C@H1][O][C@H1][Branch2][Ring1][Branch1][O][C@][Branch1][Ring1][C][O][O][C@H1][Branch1][Ring1][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][Ring1][Ring2][O]

The molecule is an organophosphate oxoanion obtained by deprotonation of the phosphate OH groups of sucrose 6(G)-phosphate; major species at pH 7.3. It is a conjugate base of a sucrose 6(G)-phosphate.

SMILES: O=P([O-])([O-])OCC1OC(OC2(CO)OC(CO)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>

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

The molecule is a fluorescent dye of absorption wavelength 555 nm and emission wavelength 565 nm, derived from a 3,6-diaminoxanthene-4,5-disulfate. It has a role as a fluorochrome.

SMILES: N=c1ccc2c(-c3ccc(C(=O)O)cc3C(=O)O)c3ccc(N)c(S(=O)(=O)O)c3oc-2c1S(=O)(=O)O
You are a professional chemist. Your task is to generate a natural, concise, and chemically accurate description of a given molecule.

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

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

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

The molecule is a 2-oxo monocarboxylic acid corresponding to the conjugate base of 4-hydroxy-2-oxopentanoic acid; major species at pH 7.3. It is a hydroxy monocarboxylic acid anion and an oxo monocarboxylic acid anion. It is a conjugate base of a 4-hydroxy-2-oxopentanoic acid.

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