Using O=[N+]([O-])O, O=S(=O)(CCO)Cc1ccc(CS(=O)(=O)CCO)cc1 to produce O=[N+]([O-])c1cc(CS(=O)(=O)CCO)ccc1CS(=O)(=O)CCO, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.