Using CI, O=C(c1ccccc1)N1CCN(c2ccc([N+](=O)[O-])c(Nc3ccccc3)c2)CC1 to produce CN(c1ccccc1)c1cc(N2CCN(C(=O)c3ccccc3)CC2)ccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.