Using COC(=O)[C@H]1C[C@H](N=[N+]=[N-])CN(C(=O)OC(C)(C)C)C1 to produce COC(=O)[C@@H]1CNC[C@H](N=[N+]=[N-])C1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.