[{"from": "human", "value": "Please give me some details about this molecule. [C][C][C@@][Branch1][C][C][Branch1][#Branch2][C][=Branch1][C][=O][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is the (S)-enantiomer of 3-hydroxy-3-methyl-2-oxopentanoate. It is a conjugate base of a (S)-3-hydroxy-3-methyl-2-oxopentanoic acid. It is an enantiomer of a (R)-3-hydroxy-3-methyl-2-oxopentanoate."}]