Using O=C([O-])[O-], O=[N+]([O-])c1ccccc1S(=O)(=O)NC1CC1 to produce CN(C1CC1)S(=O)(=O)c1ccccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.