[{"from": "human", "value": "What can you tell me about this molecule? [C][C][=C][C][=C][C][=C][Ring1][=Branch1][C][=Branch1][C][=O][N][C][C][=Branch1][C][=O][O]"}, {"from": "gpt", "value": "The molecule is an isoform of methylhippuric acid where the methyl and glycine groups are bound to carbon-1 and carbon-2 on the benzene ring, respectively. Since 2-methylhippuric acid (2-MHA) is a metabolite of o-xylene, the measurement of 2-MHA in urine may be correlated to a subject's level of xylene exposure."}]