Using Cc1cc2c3c(cc(C)c2[nH]c1=O)C(C)C(C(C)Br)O3, [N-]=[N+]=[N-] to produce Cc1cc2c3c(cc(C)c2[nH]c1=O)C(C)C(C(C)N=[N+]=[N-])O3, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.