[{"from": "human", "value": "Could you provide a description of this molecule? [C][=C][C][=Branch1][=C][=N][C][=Branch1][Branch1][=C][Ring1][=Branch1][Cl][C][=Branch1][C][=O][O][Cl]"}, {"from": "gpt", "value": "The molecule is a selective herbicide used for control of broadleaf weeds, especially thistles and clovers. Clopyralid is in the picolinic acid family of herbicides, which also includes aminopyralid, picloram, triclopyr, and several less common herbicides. For control of Creeping Thistle, Cirsium arvense, a noxious, perennial weed, clopyralid is one of the few effective herbicides available. It is particularly damaging to peas, tomatoes and sunflowers and can render potatoes, lettuce and spinach inedible. It does not affect members of the family Poaceae (grasses)."}]