[{"from": "human", "value": "Describe this molecule. [C][=C][C][=Branch1][S][=C][C][=C][Ring1][=Branch1][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][N]"}, {"from": "gpt", "value": "The molecule is a 2-oxo monocarboxylic acid anion resulting from the deprotonation of the carboxy group of 3-(4-aminophenyl)pyruvic acid. Major species at pH 7.3. It is functionally related to a pyruvate. It is a conjugate base of a 3-(4-aminophenyl)pyruvic acid."}]