[{"from": "human", "value": "Based on the given chemical reaction, suggest some possible reagents. [C][O][C][=C][C][=C][Branch1][C][Br][C][Branch1][Ring2][C][C][#N][=C][Ring1][#Branch2]>>[N][#C][C][C][=C][C][Branch1][C][O][=C][C][=C][Ring1][#Branch1][Br]"}, {"from": "gpt", "value": "[Br][B][Branch1][C][Br][Br].[Cl][C][Cl]"}]