Using C1COCCN1, O=C(O)c1cc(-c2ccc(C(F)(F)F)cc2)nc(Cl)n1 to produce O=C(c1cc(-c2ccc(C(F)(F)F)cc2)nc(Cl)n1)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.