Using CC1=NNC(=O)N(N)C1, O=C(O)c1cnc(-c2cccc(F)c2)nc1 to produce CC1=NNC(=O)N(NC(=O)c2cnc(-c3cccc(F)c3)nc2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.