[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [N][C][C][=C][N][=C][C][Branch1][C][Br][=C][Ring1][#Branch1].[O][=C][C][C][C][C][C][Ring1][Branch1]>>[Br][C][=C][N][=C][C][Branch1][O][C][N][C][C][C][C][C][C][Ring1][Branch1][=C][Ring1][=C]"}, {"from": "gpt", "value": "[C][O].[BH3-1][C][#N].[Na+1]"}]