Cc1cncnc1O    mol1620    0_1
Cc1c[nH+]cnc1[O-]    mol1620    0_2
Cc1c[nH+]cnc1O    mol1620    1_1
Cc1cnc[nH+]c1O    mol1620    1_2
Cc1cncnc1[O-]    mol1620    -1_1