[{"from": "human", "value": "Can you suggest some reagents that might have been used in the given chemical reaction? [O][=C][C][=C][N][=C][C][Branch1][C][Br][=C][Ring1][#Branch1]>>[O][C][C][=C][N][=C][C][Branch1][C][Br][=C][Ring1][#Branch1]"}, {"from": "gpt", "value": "[C][O].[BH4-1].[Na+1]"}]