CNc1nc(=N)cc(Cl)n1C    mol7223    0_1
CNc1nc(=[NH2+])cc(Cl)n1C    mol7223    1_1
CNc1[nH+]c(=N)cc(Cl)n1C    mol7223    1_2
C[NH2+]c1nc(=N)cc(Cl)n1C    mol7223    1_3