[{"from": "human", "value": "Provide a description of this molecule. [C][=Branch2][Ring1][Ring1][=C][Branch1][O][/C][=C][Branch1][=Branch1][/C][=Branch1][C][=O][O][\\O][\\C][=Branch1][C][=O][O][\\C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is a tricarboxylic acid that is buta-1,3-diene-1,2,4-tricarboxylic acid substituted by a hydroxy group at position 4. It is a tricarboxylic acid, a hydroxy carboxylic acid and an enol. It is a conjugate acid of a 4-carboxylato-2-hydroxyhexa-2,4-dienedioate(3-)."}]