O=[N+]([O-])C(CCO)[N+](=O)[O-]    mol9053    0_1
O=[N+]([O-])[C-](CCO)[N+](=O)[O-]    mol9053    -1_1
O=[N+]([O-])C(CC[O-])[N+](=O)[O-]    mol9053    -1_2