[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a dicarboxylic acid dianion obtained by deprotonation of both carboxy groups of docosanedioic acid; major species at pH 7.3. It is a conjugate base of a docosanedioic acid."}, {"from": "gpt", "value": "[C][Branch1][S][C][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1][C][C][C][C][C][C][C][C][C][C][=Branch1][C][=O][O-1]"}]