[{"from": "human", "value": "Provide a brief overview of this molecule. [C][C][Branch1][C][C][N][C][=N][C][=Branch1][#Branch2][=N][C][=Branch1][Ring2][=N][Ring1][=Branch1][S][C][N][C][Branch1][C][C][C]"}, {"from": "gpt", "value": "The molecule is a selective herbicide which controls annual grasses and broadleaf weeds in a variety of crops including cotton and celery. It inhibits photosynthesis in susceptible species. Prometryn is available in wettable powder and liquid formulations. Prometryn is a slightly to moderately toxic compound which is classified as a member of toxicity class II or III, depending on the formulation."}]