[{"from": "human", "value": "Please suggest some possible reagents that could have been used in the following chemical reaction. [C][O][C][=Branch1][C][=O][C][=C][C][=C][Branch1][Ring1][C][#N][C][=C][Ring1][Branch2][C]>>[C][C][=C][C][Branch1][Ring1][C][#N][=C][C][=C][Ring1][Branch2][C][O]"}, {"from": "gpt", "value": "[C][C][C][O][C][Ring1][Branch1].[C][C][O].[O].[BH4-1].[Ca+2].[Cl-1].[Cl-1].[Na+1]"}]