Using O=[N+]([O-])c1cc([N+](=O)[O-])c(Cl)c(C(F)(F)F)c1, Nc1ccccc1[N+](=O)[O-] to produce O=[N+]([O-])c1cc([N+](=O)[O-])c(Nc2ccccc2[N+](=O)[O-])c(C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.