[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][O][C][=C][C][=C][C][Branch1][=Branch2][C][=N][C][=C][N][Ring1][Branch1][C][=C][Ring1][N]>>[C][N][C][=C][N][=C][Ring1][Branch1][C][=C][C][=C][C][Branch1][C][O][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[Br][B][Branch1][C][Br][Br].[Cl][C][Cl].[O][=C][Branch1][C][O-1][O].[Na+1]"}]