[{"from": "human", "value": "Provide a description of this molecule. [C][O][C][=C][Branch2][Ring1][C][C][=C][C][=Branch1][Ring2][=C][Ring1][=Branch1][C][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 vanillylmandelic acid. It has a role as a human metabolite. It is functionally related to a mandelate. It is a conjugate base of a vanillylmandelic acid."}]