[{"from": "human", "value": "Provide a brief overview of this molecule. [C][=C][C][=Branch1][#C][=C][C][=C][Ring1][=Branch1][C@@H1][Branch1][=Branch1][C][=Branch1][C][=O][O][O][O]"}, {"from": "gpt", "value": "The molecule is a 4-hydroxymandelic acid that has S-configuration. It is a (2S)-2-hydroxy monocarboxylic acid and a 4-hydroxymandelic acid. It is a conjugate acid of a (S)-4-hydroxymandelate. It is an enantiomer of a (R)-4-hydroxymandelic acid."}]