Using NC(=O)CCl, O=[N+]([O-])c1cc(Br)ccc1N1CCNCC1 to produce NC(=O)CN1CCN(c2ccc(Br)cc2[N+](=O)[O-])CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.