[{"from": "human", "value": "Please give me some details about this molecule. [C][=Branch1][#Branch1][=C][\\C][=Branch1][C][=O][O-1][\\C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a hydrogen butenedioate that is the conjugate base of maleic acid. It is a hydrogen butenedioate and a maleate. It is a conjugate base of a maleic acid. It is a conjugate acid of a maleate(2-)."}]