RESIDUE   GLL     16
CONECT      C1     3 N1   N2   O1  
CONECT      O1     1 C1  
CONECT      N1     3 C1   C2   HN1 
CONECT      N2     3 C1   C3   HN2 
CONECT      C2     4 N1   N1'  C3   H2  
CONECT      C3     4 N2   C2   N2'  H3  
CONECT      N1'    3 C2   C1' 'HN1 
CONECT      N2'    3 C3   C1' 'HN2 
CONECT      C1'    3 N1'  N2'  O1' 
CONECT      O1'    1 C1' 
CONECT      HN1    1 N1  
CONECT      HN2    1 N2  
CONECT      H2     1 C2  
CONECT      H3     1 C3  
CONECT     'HN1    1 N1' 
CONECT     'HN2    1 N2' 
END
HET    GLL             16
HETNAM     GLL GLYCOLURIL
FORMUL      GLL    C4 H6 N4 O2