[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [C][O][C][=C][C][Branch1][C][Br][=C][C][=C][Ring1][#Branch1][C][#N]>>[N][#C][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1][O]"}, {"from": "gpt", "value": "[C][C][O][C][Branch1][C][C][=O].[Cl][C][Cl].[Al+3].[Cl-1].[Cl-1].[Cl-1]"}]