Using CC(Br)C(=O)c1nc(C(C)(C)C)c(O)c(C(C)(C)C)n1, [N-]=[N+]=[N-] to produce CC(N=[N+]=[N-])C(=O)c1nc(C(C)(C)C)c(O)c(C(C)(C)C)n1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.