Using O=C1CCOCC1, Nc1ccc(F)c(C(=O)NCC(O)CN2CCc3ccccc3C2)c1 to produce O=C(NCC(O)CN1CCc2ccccc2C1)c1cc(NC2CCOCC2)ccc1F, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.