[{"from": "human", "value": "Describe this molecule. [C][=Branch1][C][=O][C][Branch1][=Branch1][C][=Branch1][C][=O][O-1][O]"}, {"from": "gpt", "value": "The molecule is the conjugate base of 2-hydroxy-3-oxopropanoic acid; 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 2-hydroxy-3-oxopropanoic acid."}]