[{"from": "human", "value": "Create a molecule with the structure as the one described. 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."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=O][N][C][C][C][C][=Branch1][C][=O][C][C][=Branch1][C][=O][O-1]"}]