c1nc(C[C@@H]2CN2)c[nH]1    mol6641    0_1
c1[nH]cc(C[C@@H]2CN2)[nH+]1    mol6641    1_1
c1nc(C[C@@H]2C[NH2+]2)c[nH]1    mol6641    1_2
c1[nH]cc(C[C@@H]2C[NH2+]2)[nH+]1    mol6641    2_1