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