RESIDUE   8AR      6
CONECT      AS     4 O1   O2   O3   O4  
CONECT      O1     1 AS  
CONECT      O2     2 AS   HO2 
CONECT      O3     1 AS  
CONECT      O4     1 AS  
CONECT      HO2    1 O2  
END   
HET    8AR              6
HETNAM     8AR hydrogen arsenate
FORMUL      8AR    As1 H1 O4 2-