Using O=[N+]([O-])c1ccc(S)cc1, Cc1ccc2ncc(CO)n2c1 to produce Cc1ccc2ncc(CSc3ccc([N+](=O)[O-])cc3)n2c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.