Using O=C(C(=O)N1CC(Oc2ccc(F)cc2)C1)c1c[nH]c2ccccc12 to produce Fc1ccc(OC2CN(CCc3c[nH]c4ccccc34)C2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.