CCOC(=O)c1nc(Cl)nc(N)c1N    mol4131    0_1
CCOC(=O)c1nc(Cl)nc([NH3+])c1N    mol4131    1_1
CCOC(=O)c1nc(Cl)[nH+]c(N)c1N    mol4131    1_2
CCOC(=O)c1[nH+]c(Cl)nc(N)c1N    mol4131    1_3
CCOC(=O)c1nc(Cl)nc(N)c1[NH3+]    mol4131    1_4