[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][N][Branch1][C][C][C][=O].[C][O][C][=C][C][Branch1][C][F][=C][Branch1][C][Br][C][=C][Ring1][Branch2][F]>>[C][O][C][=C][C][Branch1][C][F][=C][Branch1][Ring1][C][=O][C][=C][Ring1][=Branch2][F]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[Li][C][C][C][C]"}]