[{"from": "human", "value": "What can you tell me about this molecule? [C][Branch1][=C][C][=Branch1][C][=O][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O][O]"}, {"from": "gpt", "value": "The molecule is a hydroxy monocarboxylic acid anion that is the conjugate base of (S)-2,4-dihydroxy-3-oxobutanoic acid, obtained by deprotonation of the carboxy group; major species at pH 7.3. It is a hydroxy monocarboxylic acid anion and a 3-oxo monocarboxylic acid anion. It is a conjugate base of a (S)-2,4-dihydroxy-3-oxobutanoic acid. It is an enantiomer of a (R)-2,4-dihydroxy-3-oxobutanoate."}]