O=[N+]([O-])C(CCCO)[N+](=O)[O-]    mol9231    0_1
O=[N+]([O-])[C-](CCCO)[N+](=O)[O-]    mol9231    -1_1
O=[N+]([O-])C(CCC[O-])[N+](=O)[O-]    mol9231    -1_2