[{"from": "human", "value": "Please give me some details about this molecule. [C][=Branch1][#Branch2][=C][Branch1][=Branch1][/C][=Branch1][C][=O][O][\\O][Branch1][=Branch1][\\C][=Branch1][C][=O][O][/O]"}, {"from": "gpt", "value": "The molecule is a 2-hydroxydicarboxylic acid consisting of fumaric acid having two hydroxy groups at the 2- and 3-positions. It is a 2-hydroxydicarboxylic acid and a C4-dicarboxylic acid. It is functionally related to a fumaric acid. It is a conjugate acid of a dihydroxyfumarate(2-)."}]