[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an oxo carboxylic acid."}, {"from": "gpt", "value": "[C][C][N][C][=Branch1][C][=O][C][O][C][=Branch1][C][=O][C][C][C][=Branch1][C][=O][C][=C][C][=C][S][Ring1][Branch1]"}]