[{"from": "human", "value": "Generate a molecule based on the given description. The molecule appears as a solid. Used as a selective contact herbicide."}, {"from": "gpt", "value": "[C][C][C][C][C][C][C][C][=Branch1][C][=O][O][C][=C][Branch1][N][C][=C][Branch1][=Branch1][C][=C][Ring1][=Branch1][Br][C][#N][Br]"}]