Using O=C(O)C(F)(F)F, CC(C)(C)OC(=O)N1CCC(Oc2ncc([N+](=O)[O-])c3ccccc23)CC1 to produce O=[N+]([O-])c1cnc(ON2CCCCC2)c2ccccc12, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.