[{"from": "human", "value": "Describe this molecule. [C][C][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][Branch1][#Branch1][C][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a dicarboxylic acid dianion that results from the removal of a proton from both of the carboxylic acid groups of 3-hydroxy-3-methylglutaric acid. It has a role as a human metabolite and a plant metabolite. It is a dicarboxylic acid dianion and a 3-hydroxydicarboxylate(2-). It is functionally related to a glutarate(2-). It is a conjugate base of a 3-hydroxy-3-methylglutarate(1-)."}]