[{"from": "human", "value": "Describe this molecule. [C][Branch2][Ring1][#Branch1][C][C][=Branch1][C][=O][N][C@@H1][Branch1][Ring1][C][S][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a peptide anion obtained by deprotonation of the carboxy groups of N-(4-oxoglutaryl)-L-cysteinylglycine; major species at pH 7.3. It is a peptide anion and a dicarboxylic acid dianion. It is a conjugate base of a N-(4-oxoglutaryl)-L-cysteinylglycine."}]