Using O=[N+]([O-])c1ccc(O)cc1, COCCOCCOCCOS(=O)(=O)c1ccc(C)cc1 to produce COCCOCCOCCOc1ccc([N+](=O)[O-])cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.