[{"from": "human", "value": "What can you tell me about this molecule? [C][C][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a member of oxopentanoates and a 3-oxo fatty acid anion. It is a conjugate base of a 3-oxopentanoic acid."}]