Cn1cncc2ncc(=N)nc1-2    mol8156    0_1
Cn1cncc2ncc(=[NH2+])nc1-2    mol8156    1_1
Cn1c[nH+]cc2ncc(=N)nc1-2    mol8156    1_2
Cn1cncc2[nH+]cc(=N)nc1-2    mol8156    1_3
Cn1cncc2ncc(=N)[nH+]c1-2    mol8156    1_4