CNc1ccnc(N)n1    mol7094    0_1
C[NH2+]c1ccnc(N)n1    mol7094    1_1
CNc1cc[nH+]c(N)n1    mol7094    1_2
CNc1ccnc(N)[nH+]1    mol7094    1_3
CNc1ccnc([NH3+])n1    mol7094    1_4