RESIDUE   CFO      4
CONECT      CL     1 FE2 
CONECT      FE2    2 CL   O   
CONECT      O      2 FE2  FE1 
CONECT      FE1    1 O   
END   
HET    CFO              4
HETNAM     CFO CHLORO DIIRON-OXO MOIETY
FORMUL      CFO    Cl Fe2 O