O=C(O)c1cc[n+]([O-])cc1    mol1296    0_1
O=C([O-])c1cc[n+](O)cc1    mol1296    0_2
O=C(O)c1cc[n+](O)cc1    mol1296    1_1
O=C([O-])c1cc[n+]([O-])cc1    mol1296    -1_1