Sc1cnccn1    mol3990    0_1
[S-]c1c[nH+]ccn1    mol3990    0_2
Sc1cncc[nH+]1    mol3990    1_1
Sc1c[nH+]ccn1    mol3990    1_2
[S-]c1cnccn1    mol3990    -1_1