[{"from": "human", "value": "Describe this molecule. [C][=C][C][=C][Branch1][Branch1][C][=C][Ring1][=Branch1][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][O]"}, {"from": "gpt", "value": "The molecule is a (2S)-2-hydroxy monocarboxylic acid and a mandelic acid. It is a conjugate acid of a (S)-mandelate. It is an enantiomer of a (R)-mandelic acid."}]