Using O=C(CCl)Nc1ccc(F)cn1, O=[N+]([O-])c1cn[nH]c1 to produce O=C(Cn1cc([N+](=O)[O-])cn1)Nc1ccc(F)cn1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.