Using O=[N+]([O-])O, O=C1CCCC(c2ccc(Cl)c(Cl)c2)N1c1ccccc1 to produce O=C1CCCC(c2ccc(Cl)c(Cl)c2)N1c1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.