Using CCOC(=O)CCC1=NC(O)(C(F)(F)F)CC(O)(C(F)(F)F)N1 to produce CCOC(=O)CCc1nc(C(F)(F)F)cc(C(F)(F)F)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.