Using Cc1ccc(Cl)c(N)c1, O=[N+]([O-])c1cc([N+](=O)[O-])c(Cl)c(C(F)(F)F)c1 to produce Cc1ccc(Cl)c(Nc2c([N+](=O)[O-])cc([N+](=O)[O-])cc2C(F)(F)F)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.