[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][N][C][=N][C][=Branch1][=Branch2][=N][C][=Branch1][Ring2][=N][Ring1][=Branch1][Cl][N][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a white crystalline solid. Melting point 173-175 \u00b0C. Sinks in water. A selective herbicide used for season-long weed control in a variety of crops."}]