RESIDUE   89N     14
CONECT      C2     4 C4   O2   H1   H2  
CONECT      C3     4 C5   O1   H3   H4  
CONECT      C4     3 C2   C5   H5  
CONECT      C5     3 C3   C4   H6  
CONECT      O1     2 C3   H7  
CONECT      O2     2 C2   H8  
CONECT      H1     1 C2  
CONECT      H2     1 C2  
CONECT      H3     1 C3  
CONECT      H4     1 C3  
CONECT      H5     1 C4  
CONECT      H6     1 C5  
CONECT      H7     1 O1  
CONECT      H8     1 O2  
END   
HET    89N             14
HETNAM     89N (2E)-but-2-ene-1,4-diol
FORMUL      89N    C4 H8 O2