[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a cyclobutanedicarboxylate. It is a conjugate base of a cyclobutane-1,1-dicarboxylate(1-)."}, {"from": "gpt", "value": "[C][C][C][Branch1][Ring2][C][Ring1][Ring2][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}]