[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][N][C][=Branch1][C][=O][/C][=C][\\C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a 4-oxohex-2-enedioate that is the conjugate base of maleylacetic acid. It is a conjugate base of a maleylacetic acid."}]