[{"from": "human", "value": "Use the given information to create a molecule that fulfills the desired purpose. The molecule is a 2-hydroxy carboxylic acid that is mandelic acid bearing a phenolic hydroxy substituent at position 4. It has a role as a metabolite. It is a 2-hydroxy carboxylic acid and a member of phenols. It is functionally related to a mandelic acid. It is a conjugate acid of a 4-hydroxymandelate."}, {"from": "gpt", "value": "[C][=C][C][=Branch1][#C][=C][C][=C][Ring1][=Branch1][C][Branch1][=Branch1][C][=Branch1][C][=O][O][O][O]"}]