[{"from": "human", "value": "What can you tell me about this molecule? [C][=Branch1][#Branch1][=C][/C][=Branch1][C][=O][O][\\C][=Branch1][C][=O][/C][=C][/O-1]"}, {"from": "gpt", "value": "The molecule is a 6-oxo monocarboxylic acid anion that is the conjugate base of (2E,4Z)-4-hydroxy-6-oxohexa-2,4-dienoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a conjugate base of a (2E,4Z)-4-hydroxy-6-oxohexa-2,4-dienoic acid."}]