Using C1COCCN1, O=C(O)Cn1nc(-c2ccc(F)cc2)c2c(Cl)c(-c3ccccc3)nnc21 to produce O=C(Cn1nc(-c2ccc(F)cc2)c2c(Cl)c(-c3ccccc3)nnc21)N1CCOCC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.