Using COc1ccc(F)cc1C1(CC(O)(C(=O)Nc2ccc3c(c2)COC3=O)C(F)(F)F)CC1 to produce O=C1OCc2cc(NC(=O)C(O)(CC3(c4cc(F)ccc4O)CC3)C(F)(F)F)ccc21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.