Using CC(C)(C)OC(=O)N1CCNCC1, O=[N+]([O-])c1ccc(Br)cn1 to produce CC(C)(C)OC(=O)N1CCN(c2ccc([N+](=O)[O-])nc2)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.