[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][C][C][O][C][N][Branch1][#C][C][=C][Branch1][=Branch2][C][=C][C][=C][Ring1][=Branch1][C][C][C][C][C][=Branch1][C][=O][C][Cl]"}, {"from": "gpt", "value": "The molecule is a selective herbicide used worldwide in corn, soybean and other crop cultures. Elevated concentrations of these herbicides and their degradation products have been detected in surface and groundwater. (A252) "}]