Using O=C(NCCCNc1nc(Cl)ncc1Br)Nc1cccc([N+](=O)[O-])c1 to produce Nc1cccc(NC(=O)NCCCNc2nc(Cl)ncc2Br)c1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.