[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [C][N][Branch1][C][C][C][=O].[F][C][=C][C][Branch1][C][Br][=C][Branch1][C][F][C][=C][Ring1][Branch2][Br]>>[O][=C][C][=C][C][Branch1][C][F][=C][Branch1][C][Br][C][=C][Ring1][Branch2][F]"}, {"from": "gpt", "value": "[C][C][O][C][C].[Li][C][C][C][C]"}]