Oc1nncc2ccccc12    mol2157    0_1
[O-]c1n[nH+]cc2ccccc12    mol2157    0_2
Oc1[nH+]ncc2ccccc12    mol2157    1_1
Oc1n[nH+]cc2ccccc12    mol2157    1_2
[O-]c1nncc2ccccc12    mol2157    -1_1