[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][C][Branch1][C][C][C][C][N].[O][=C][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1][Cl]>>[C][C][Branch1][C][C][C][C][N][C][C][=C][C][=C][Branch1][C][Br][C][=C][Ring1][#Branch1][Cl]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]