Using CC1=Nc2ccccc2C1(C)C, O=[N+]([O-])c1cc(CCl)cc([N+](=O)[O-])c1 to produce CC1=[N+](Cc2cc([N+](=O)[O-])cc([N+](=O)[O-])c2)c2ccccc2C1(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.