Using CN1CCCC1=O, CC(C)(C)OC(=O)NC1Cc2cc(Br)cc([N+](=O)[O-])c2NC1=O to produce CC(C)(C)OC(=O)NC1Cc2cccc(N3CCCC3=O)c2NC1=O, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.