Using O=[N+]([O-])O, CCc1cccc(CC)c1NS(=O)(=O)c1ccc(C)cc1 to produce CCc1cc([N+](=O)[O-])cc(CC)c1NS(=O)(=O)c1ccc(C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.