[{"from": "human", "value": "Design a molecule that meets the criteria outlined in the description. The molecule is dicarboxylate anion of (R)-3,3-dimethylmalic acid. It is a conjugate base of a (R)-3,3-dimethylmalic acid."}, {"from": "gpt", "value": "[C][C][Branch1][C][C][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][C][=Branch1][C][=O][O-1]"}]