Cn1cncc2ncc(=O)nc1-2    mol26198    0_1
Cn1cncc2ncc(=O)[nH+]c1-2    mol26198    1_1
Cn1cncc2ncc(=[OH+])nc1-2    mol26198    1_2
Cn1cncc2[nH+]cc(=O)nc1-2    mol26198    1_3
Cn1c[nH+]cc2ncc(=O)nc1-2    mol26198    1_4