[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [C][O][C][=C][C][=C][C][=C][N][=C][Branch1][C][C][N][=C][Ring1][O][Ring1][#Branch1]>>[C][C][=N][C][=C][C][=C][C][=C][Branch1][C][O][C][Ring1][#Branch1][=N][Ring1][O]"}, {"from": "gpt", "value": "[Br][B][Branch1][C][Br][Br].[Cl][C][Cl].[O][=C][Branch1][C][O-1][O].[Na+1]"}]