[{"from": "human", "value": "Given the following chemical reaction, what are some potential reagents that could have been employed? [O][=C][C][=C][C][=C][Branch1][=N][O][C][=C][C][=C][Branch1][C][Cl][N][=N][Ring1][#Branch1][C][=C][Ring1][=C]>>[O][C][C][=C][C][=C][Branch1][=N][O][C][=C][C][=C][Branch1][C][Cl][N][=N][Ring1][#Branch1][C][=C][Ring1][=C]"}, {"from": "gpt", "value": "[C][O].[O].[BH4-1].[Na+1]"}]