CNc1cc(Cl)nc(N)n1    mol7021    0_1
CNc1cc(Cl)nc([NH3+])n1    mol7021    1_1
C[NH2+]c1cc(Cl)nc(N)n1    mol7021    1_2
CNc1cc(Cl)[nH+]c(N)n1    mol7021    1_3
CNc1cc(Cl)nc(N)[nH+]1    mol7021    1_4