Using C1COCCN1, CCOC(=O)c1nnn(Cc2cc(C(F)(F)F)cc(C(F)(F)F)c2)c1Cl to produce O=C(c1nnn(Cc2cc(C(F)(F)F)cc(C(F)(F)F)c2)c1N1CCOCC1)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.