[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [C][C][O][C][C][N][Ring1][=Branch1].[N][#C][C][C][C][Br]>>[N][#C][C][C][C][N][C][C][O][C][C][Ring1][=Branch1]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[C][C][O][C][C]"}]