C1=C[NH2+]C(c2ccncc2)N1    mol21096    1_1
C1=CNC(c2cc[nH+]cc2)N1    mol21096    1_2
C1=C[NH2+]C(c2ccncc2)[NH2+]1    mol21096    2_1
C1=C[NH2+]C(c2cc[nH+]cc2)N1    mol21096    2_2