Using O=S1(=O)c2ccccc2-c2ccccc21, O=[N+]([O-])O to produce O=[N+]([O-])c1ccc2c(c1)S(=O)(=O)c1ccccc1-2, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.