Using CC(=O)OC(OC(C)=O)c1ccc(C(OC(C)=O)(C(F)(F)F)C(F)(F)F)cc1 to produce CC(=O)OC(c1ccc(C=O)cc1)(C(F)(F)F)C(F)(F)F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.