[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is an amino fatty acid anion."}, {"from": "gpt", "value": "[C][Branch1][N][C][NH2+1][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][O-1]"}]