Using CCOC(=O)C(NC(=O)C(F)(F)F)C(=O)c1ccc(F)cc1 to produce CCOC(=O)c1nc(C(F)(F)F)oc1-c1ccc(F)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.