[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][O][C][=C][C][Branch1][Ring1][C][#N][=C][Branch1][Ring1][O][C][C][=C][Ring1][#Branch2][C][#N]>>[N][#C][C][=C][C][Branch1][C][O][=C][Branch1][Ring1][C][#N][C][=C][Ring1][=Branch2][O]"}, {"from": "gpt", "value": "[Cl].[Al+3].[Br-1].[Br-1].[Br-1].[C][=C][C][=C][C][=C][Ring1][=Branch1]"}]