Using CC1(C)N(CCO)C(=O)C2CN(CCCC(c3ccc(F)cc3)c3ccc(F)cc3)CCN21 to produce O=C(NCCO)C1CN(CCCC(c2ccc(F)cc2)c2ccc(F)cc2)CCN1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.