[{"from": "human", "value": "Please provide possible reagents based on the following chemical reaction. [O][=C][C][=C][N][=C][C][Branch1][C][Br][=C][Ring1][#Branch1][Cl]>>[O][C][C][=C][N][=C][C][Branch1][C][Br][=C][Ring1][#Branch1][Cl]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]