Mrv1805 06262517072D          

  0  0  0     0  0            999 V3000
M  V30 BEGIN CTAB
M  V30 COUNTS 4 3 0 0 0
M  V30 BEGIN ATOM
M  V30 1 C 2.31 0 0 0 RAD=1
M  V30 2 C 0.77 0 0 0
M  V30 3 C -0.77 0 0 0
M  V30 4 O -2.31 0 0 0
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 2 1 2
M  V30 2 2 2 3
M  V30 3 2 3 4
M  V30 END BOND
M  V30 END CTAB
M  END