O=C(N/N=C/c1ccccc1)c1ccncc1    mol15221    0_1
O=C(N/[NH+]=C/c1ccccc1)c1ccncc1    mol15221    1_1
O=C(N/N=C/c1ccccc1)c1cc[nH+]cc1    mol15221    1_2