[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a 4-oxo monocarboxylic acid anion. It is functionally related to a glutaramate. It is a conjugate base of a 4-oxoglutaramic acid."}, {"from": "gpt", "value": "[C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][C][=Branch1][C][=O][N]"}]