Using O=[N+]([O-])O, CC(=O)Nc1c(OS(=O)(=O)c2ccc(C)cc2)cccc1OS(=O)(=O)c1ccc(C)cc1 to produce CC(=O)Nc1c(OS(=O)(=O)c2ccc(C)cc2)cc([N+](=O)[O-])cc1OS(=O)(=O)c1ccc(C)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.