O=[N+]([O-])c1nc[nH]n1    mol25276    0_1
O=[N+]([O-])c1n[nH]c[nH+]1    mol25276    1_1
O=[N+]([O-])c1nc[nH][nH+]1    mol25276    1_2
O=[N+]([O-])c1nc[n-]n1    mol25276    -1_1