Using [N-]=[N+]=[N-], O=C(c1ccc(CBr)cc1)C1CCCCC1 to produce [N-]=[N+]=NCc1ccc(C(=O)C2CCCCC2)cc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.