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