[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][O][P][=Branch1][C][=O][Branch1][C][O][O][C][C]"}, {"from": "gpt", "value": "The molecule is product of metabolism and of environmental degradation of Chlorpyrifos (CPF; a commonly used diethylphosphorothionate organophosphorus (OP) insecticide) and are routinely measured in urine as biomarkers of exposure.  (A3200)."}]