Using COc1ccc2c(c1)CN(S(=O)(=O)c1ccccc1[N+](=O)[O-])CC2c1ccc(Cl)c(Cl)c1 to produce O=[N+]([O-])c1ccccc1S(=O)(=O)N1Cc2cc(O)ccc2C(c2ccc(Cl)c(Cl)c2)C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.