O=C(O)c1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-]    mol929    0_1
O=C([O-])c1c([N+](=O)[O-])cc([N+](=O)[O-])cc1[N+](=O)[O-]    mol929    -1_1