[{"from": "human", "value": "Describe this molecule. [C][C][=Branch1][C][=O][N][C][C][C][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a 3-oxo monocarboxylic acid anion. It is functionally related to a hexanoate. It is a conjugate base of a 6-acetamido-3-oxohexanoic acid."}]