Using CC(C)(C)OC(=O)N1CCN(C(=O)CBr)CC1, COc1cc(C2=CCNCC2)ccc1[N+](=O)[O-] to produce COc1cc(C2=CCN(CC(=O)N3CCN(C(=O)OC(C)(C)C)CC3)CC2)ccc1[N+](=O)[O-], please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.