[{"from": "human", "value": "Create a molecule with the structure as the one described. The molecule is trianion of 1-carboxyvinyl carboxyphosphonate arising from deprotonation of the carboxy and phosphonate groups; major species at pH 7.3. It is a dicarboxylic acid dianion and an organophosphonate oxoanion. It is a conjugate base of a 1-carboxyvinyl carboxyphosphonate."}, {"from": "gpt", "value": "[C][=C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][P][=Branch1][C][=O][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O-1]"}]