Using COC(=O)C[C@@H](c1ccc(OCc2ccc(-c3ccc(C(F)(F)F)cc3)s2)cc1)c1ccon1 to produce O=C(O)C[C@@H](c1ccc(OCc2ccc(-c3ccc(C(F)(F)F)cc3)s2)cc1)c1ccon1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.