Using CCOC(=O)C1CC(c2ccc(OC(F)(F)F)cc2)CN(C(=O)C2CCCC2)C1 to produce O=C(O)C1CC(c2ccc(OC(F)(F)F)cc2)CN(C(=O)C2CCCC2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.