Using O=[N+]([O-])c1ccc(S)nc1, O=C(OCCBr)c1cccc(Cl)c1 to produce O=C(OCCSc1ccc([N+](=O)[O-])cn1)c1cccc(Cl)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.