[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][C][Branch1][Ring1][C][O][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is dicarboxylate anion of 2-hydroxymethylglutaric acid. It is a conjugate base of a 2-hydroxymethylglutaric acid."}]