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