Using CC1(C)OC(=O)N2CCN(C(=O)OCc3ccccc3)CC21, O=C=NCc1ccc(F)cc1 to produce CC1(C)OC(=O)N2CCN(C(=O)NCc3ccc(F)cc3)CC21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.