Using O=C([O-])[O-], CC(C)(C)OC(=O)N1CCC(NS(=O)(=O)c2ccccc2[N+](=O)[O-])CC1 to produce CN(C1CCN(C(=O)OC(C)(C)C)CC1)S(=O)(=O)c1ccccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.