RESIDUE   MH2      3
CONECT      MN     1 O1  
CONECT      O1     2 MN   H2  
CONECT      H2     1 O1  
END   
HET    MH2              3
HETSYN     MH2 [MN(OH)]+
HETNAM     MH2 MANGANESE ION, 1 HYDROXYL COORDINATED
FORMUL      MH2    H1 Mn1 O1 2+