[{"from": "human", "value": "What can you tell me about this molecule? [C][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][C][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "The molecule is a C4-dicarboxylate resulting from the removal of a proton from both carboxylic acid groups of methylmalonic acid. It has a role as a human metabolite. It is functionally related to a malonate(2-). It is a conjugate base of a methylmalonate(1-)."}]