[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][N][Branch1][C][C][C][=O].[O][C][C][C][=C][C][=C][C][Branch1][C][Br][=C][Ring1][#Branch1]>>[O][=C][C][=C][C][=C][C][Branch1][Ring2][C][C][O][=C][Ring1][=Branch2]"}, {"from": "gpt", "value": "[C][C][O][C][C].[C][N][Branch1][C][C][C][C][N][Branch1][C][C][C].[Li][C][C][C][C]"}]