RESIDUE   YHO     20
CONECT      O3     2 C3   HO3 
CONECT      C3     4 O3   C2   C4   H3  
CONECT      C2     4 C3   O2   C1   H2  
CONECT      O2     2 C2   HO2 
CONECT      C1     4 C2   N1   C5   H1  
CONECT      N1     3 C1   HN1  HN1A
CONECT      C5     4 C1   C4   H5   H5A 
CONECT      C4     4 C3   C5   O4   H4  
CONECT      O4     2 C4   HO4 
CONECT      HO3    1 O3  
CONECT      H3     1 C3  
CONECT      H2     1 C2  
CONECT      HO2    1 O2  
CONECT      H1     1 C1  
CONECT      HN1    1 N1  
CONECT      HN1A   1 N1  
CONECT      H5     1 C5  
CONECT      H5A    1 C5  
CONECT      H4     1 C4  
CONECT      HO4    1 O4  
END   
HET    YHO             20
HETNAM     YHO (1S,2S,3R,4R)-4-aminocyclopentane-1,2,3-triol
FORMUL      YHO    C5 H11 N1 O3