[{"from": "human", "value": "Please propose potential reagents that might have been utilized in the provided chemical reaction. [C][C][N][C][=C][C][=C][Branch1][Ring1][C][=O][C][=C][C][=C][Ring1][Branch2][Ring1][O]>>[C][C][N][C][=C][C][=C][Branch1][Ring1][C][O][C][=C][C][=C][Ring1][Branch2][Ring1][O]"}, {"from": "gpt", "value": "[C][C][O].[Cl][C][Cl].[BH4-1].[Na+1]"}]