[{"from": "human", "value": "Could you give me a brief overview of this molecule? [C][C][=Branch1][C][=O][C][C][=Branch1][C][=O][C][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a trioxo monocarboxylic acid anion. It is functionally related to a heptanoate. It is a conjugate base of a 2,4,6-trioxoheptanoic acid."}]