[{"from": "human", "value": "Provide a description of this molecule. [C][Branch1][O][C@@H1][Branch1][#Branch1][C@H1][Branch1][Ring1][C][=O][O][O][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is the anion resulting from the removal of a proton from the carboxylic acid group of 5-dehydro-4-deoxy-D-glucuronic acid. It is a conjugate base of a 5-dehydro-4-deoxy-D-glucuronic acid."}]