NC1=N[C@@](c2ccncc2)(c2cccc(-c3cncnc3)c2)c2ccccc21    mol19690    0_1
NC1=N[C@@](c2cc[nH+]cc2)(c2cccc(-c3cncnc3)c2)c2ccccc21    mol19690    1_1
NC1=[NH+][C@@](c2ccncc2)(c2cccc(-c3cncnc3)c2)c2ccccc21    mol19690    1_2
NC1=N[C@@](c2ccncc2)(c2cccc(-c3cnc[nH+]c3)c2)c2ccccc21    mol19690    1_3