Using CN(C(=O)OC(C)(C)C)[C@@H](CN=[N+]=[N-])COCc1ccccc1 to produce CN(C(=O)OC(C)(C)C)[C@@H](CN)COCc1ccccc1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.