Cc1cnc2ncncc2n1    mol8209    0_1
Cc1cnc2ncncc2[nH+]1    mol8209    1_1
Cc1cnc2[nH+]cncc2n1    mol8209    1_2
Cc1cnc2nc[nH+]cc2n1    mol8209    1_3
Cc1c[nH+]c2ncncc2n1    mol8209    1_4