Using CC(C)(C)OC(=O)N1C(=O)OC(c2ccc(F)cc2)C1Cc1cccc(OC(F)(F)C(F)F)n1 to produce CC(C)(C)OC(=O)NC(Cc1cccc(OC(F)(F)C(F)F)n1)C(O)c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.