RESIDUE   FOP     15
CONECT      N4     4 C5   H41  H42  H43 
CONECT      C5     4 N4   C6   H51  H52 
CONECT      C6     4 C5   C7   O7   H6  
CONECT      C7     4 C6   H71  H72  H73 
CONECT      O7     2 C6   HO7 
CONECT      H41    1 N4  
CONECT      H42    1 N4  
CONECT      H43    1 N4  
CONECT      H51    1 C5  
CONECT      H52    1 C5  
CONECT      H6     1 C6  
CONECT      H71    1 C7  
CONECT      H72    1 C7  
CONECT      H73    1 C7  
CONECT      HO7    1 O7  
END   
HET    FOP             15
HETSYN     FOP F-LOOP OF VITAMIN B12
HETNAM     FOP 2-HYDROXY-PROPYL-AMMONIUM
FORMUL      FOP    C3 H10 N1 O1 1+