[O-]c1nc2c[nH+]ccc2[nH]1    mol7978    0_1
Oc1nc2cnccc2[nH]1    mol7978    0_2
Oc1nc2c[nH+]ccc2[nH]1    mol7978    1_1
Oc1[nH]c2ccncc2[nH+]1    mol7978    1_2
Oc1nc2cnccc2[n-]1    mol7978    -1_1
[O-]c1nc2cnccc2[nH]1    mol7978    -1_2