[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [C][=C][C][Br].[C][C][C][=C][C][=C][C][Branch1][C][O][=C][Ring1][#Branch1][N+1][=Branch1][C][=O][O-1]>>[C][=C][C][O][C][=C][C][=C][C][Branch1][Ring1][C][C][=C][Ring1][Branch2][N+1][=Branch1][C][=O][O-1]"}, {"from": "gpt", "value": "[C][C][Branch1][C][C][=O].[C][C][O][C][C].[O][=C][Branch1][C][O-1][O-1].[I-1].[K+1].[K+1].[Na+1]"}]