Using CC(C)(C)OC(=O)NCC[C@@H](COS(C)(=O)=O)NC(=O)OC(C)(C)C, [N-]=[N+]=[N-] to produce CC(C)(C)OC(=O)NCC[C@@H](CN=[N+]=[N-])NC(=O)OC(C)(C)C, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.