Using CCOC(=O)c1cc(-c2ccc(OC(F)F)c(OCC3CC3)c2)[nH]c1COCc1ccc(OC)cc1 to produce CCOC(=O)c1cc(-c2ccc(OC(F)F)c(OCC3CC3)c2)[nH]c1C=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.