[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [Br][C][=C][C][=C][C][=C][C][=C][C][Ring1][=Branch1][=N][Ring1][#Branch2].[C][#C][C][C][C][C][O][C][C][C][C][C][C][Br]>>[Br][C][C][C][C][C][C][O][C][C][C][C][C][#C][C][=C][C][=C][C][=C][C][=C][C][Ring1][=Branch1][=N][Ring1][#Branch2]"}, {"from": "gpt", "value": "[C][C][#N].[C][C][O][C][C].[Cu][I]"}]