Using O=[N+]([O-])O, CC(=O)N[C@H]1CC[C@H](O)CC1 to produce CC(=O)N[C@H]1CC[C@H](O[N+](=O)[O-])CC1, please predict the agent for this reaction in SMILES notation in \boxed{$SMILES1, SMILES2, ...} format.