[{"from": "human", "value": "Based on the given information, design a molecule that meets the desired specifications. The molecule is a dicarboxylic acid dianion. It is functionally related to a propionate. It is a conjugate base of a 2,2'-iminodipropanoic acid."}, {"from": "gpt", "value": "[C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][N][C][Branch1][C][C][C][=Branch1][C][=O][O-1]"}]