[{"from": "human", "value": "Based on the given chemical reaction, can you propose some likely reagents that might have been utilized? [C][C][O][C][=Branch1][C][=O][C][N][C][=C][C][=C][C][Ring1][=Branch1][=O]>>[O][=C][C][=C][C][=C][N][Ring1][=Branch1][C][C][O]"}, {"from": "gpt", "value": "[C][C][O][C][C][O][Ring1][=Branch1].[C][C][O][C][Branch1][C][C][=O].[BH4-1].[Li+1]"}]