[{"from": "human", "value": "Generate a molecule based on the given description. The molecule is a 6-oxo monocarboxylic acid anion that is the conjugate base of 3-isopropenyl-6-oxoheptanoic acid; major species at pH 7.3. It is functionally related to a heptanoate. It is a conjugate base of a 3-isopropenyl-6-oxoheptanoic acid."}, {"from": "gpt", "value": "[C][C][=Branch1][C][=C][C][Branch1][Branch2][C][C][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][O-1]"}]