Mrv1805 08202119572D          

  0  0  0     0  0            999 V3000
M  V30 BEGIN CTAB
M  V30 COUNTS 6 4 0 0 0
M  V30 BEGIN ATOM
M  V30 1 O 1.54 -3.0843 0 0 CHG=-1
M  V30 2 Cr 1.54 -1.5443 0 0
M  V30 3 O 0 -1.5443 0 0 CHG=-1
M  V30 4 O 1.54 0 0 0
M  V30 5 O 3.0799 -1.5443 0 0
M  V30 6 Ca 4.3016 -3.7252 0 0 CHG=2
M  V30 END ATOM
M  V30 BEGIN BOND
M  V30 1 1 1 2
M  V30 2 1 2 3
M  V30 3 2 2 4
M  V30 4 2 2 5
M  V30 END BOND
M  V30 END CTAB
M  END