Using CC(C)(C)OC(=O)C[C@@]1(C[N+](=O)[O-])C[C@H]2CC=C[C@H]21 to produce CC(C)(C)OC(=O)C[C@@]1(CN)C[C@H]2CC=C[C@H]21, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.