Cn1cc2[nH]cnc2nc1=O    mol4869    0_1
Cn1cc2[nH]c[nH+]c2nc1=O    mol4869    1_1
Cn1cc2[nH]cnc2[nH+]c1=O    mol4869    1_2
Cn1cc2[n-]cnc2nc1=O    mol4869    -1_1