[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is conjugate base of N-(carboxyaminomethyl)urea. It is a conjugate base of a N-(carboxyaminomethyl)urea."}, {"from": "gpt", "value": "[C][Branch1][#Branch1][N][C][=Branch1][C][=O][N][N][C][=Branch1][C][=O][O-1]"}]