[{"from": "human", "value": "What can you tell me about this molecule? [C][C][Branch1][C][C][Branch1][#Branch2][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is a 2-oxo monocarboxylic acid anion and a hydroxy monocarboxylic acid anion. It is a conjugate base of a 3-hydroxy-3-methyl-2-oxobutanoic acid."}]