[{"from": "human", "value": "Provide a description of this molecule. [C][C][=C][Branch1][=Branch1][O][C][Ring1][Branch1][=O][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a monocarboxylic acid anion that is the conjugate base of 5-oxo-4,5-dihydro-2-furylacetic acid. It has a role as a bacterial metabolite. It is a conjugate base of a 5-oxo-4,5-dihydro-2-furylacetic acid."}]