[{"from": "human", "value": "Synthesize a molecule that matches the given characteristics. The molecule is a dicarboxylic acid dianion obtained by removal of a proton from both of the carboxylic acid groups of 5-dehydro-4-deoxy-D-glucarate. It is functionally related to a D-glucarate(2-). It is a conjugate base of a 5-dehydro-4-deoxy-D-glucarate(1-)."}, {"from": "gpt", "value": "[C][Branch1][=C][C@@H1][Branch1][#Branch2][C@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][O][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1]"}]