[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is a dicarboxylic acid anion."}, {"from": "gpt", "value": "[C][C][S][C][C][=Branch1][#Branch2][=N][C@@H1][Ring1][#Branch1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}]