Using Nc1c(S)cccc1Cl, O=[N+]([O-])c1cccc(Cl)c1Cl to produce Nc1c(Cl)cccc1Sc1c(Cl)cccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.