0Chemicalbook104-04-1.MOL
  ChemDraw02032320432D
 13 13  0  0  0  0  0  0  0  0999 V2000
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    1.7862    1.2375    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
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  1  2  1  0      
  1  3  2  0      
  1  4  1  0      
  5  6  1  0      
  6  7  2  0      
  7  8  1  0      
  8  9  2  0      
  9 10  1  0      
  5 10  2  0      
 11 12  2  0      
 11 13  1  0      
  8 11  1  0      
  4  5  1  0      
M  CHG  2  11   1  13  -1
M  END