Using CC(C)(C)OC(=O)N1CCc2c(n(CCOS(C)(=O)=O)c3ccccc23)CC1, [N-]=[N+]=[N-] to produce CC(C)(C)OC(=O)N1CCc2c(n(CCN=[N+]=[N-])c3ccccc23)CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.