Using COc1ccc(S(=O)(=O)N2C(=O)C(N)(c3ccccc3Cl)c3cc(Cl)ccc32)c([N+](=O)[O-])c1 to produce COc1ccc(S(=O)(=O)N2C(=O)C(N)(c3ccccc3Cl)c3cc(Cl)ccc32)c(N)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.