[{"from": "human", "value": "Could you provide a description of this molecule? [C][Branch1][=N][/C][=C][\\C][=C][Branch1][=Branch1][\\C][=Branch1][C][=O][O][/O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid dianion obtained by deprotonation of the carboxy groups of 2-hydroxyhepta-2,4-diene-1,7-dioic acid; major species at pH 7.3. It is a conjugate base of a (2Z,4Z)-2-hydroxyhepta-2,4-dienedioic acid. It is a tautomer of a (4Z)-2-oxohept-4-enedioate."}]