[{"from": "human", "value": "Provide a description of this molecule. [C][C][Branch1][C][C][C][=Branch1][C][=O][/C][=C][\\C][=Branch1][#Branch2][=C][Branch1][=Branch1][/C][=Branch1][C][=O][O][\\O-1][\\C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a hydroxy monocarboxylic acid anion obtained by deprotonation of the carboxy groups of 2-hydroxy-3-carboxy-6-oxo-7-methylocta-2,4-dienoic acid; major species at pH 7.3. It is functionally related to an octa-2,4-dienoate. It is a conjugate base of a 2-hydroxy-3-carboxy-6-oxo-7-methylocta-2,4-dienoic acid."}]