D0A9KF
  -OEChem-04152110082D

  4  2  0     0  0  0  0  0  0999 V2000
    3.0000   -0.5000    0.0000 Ca  0  2  0  0  0  0  0  0  0  0  0  0
    2.0000   -0.5000    0.0000 N   0  5  0  0  0  0  0  0  0  0  0  0
    3.0000    0.5000    0.0000 N   0  5  0  0  0  0  0  0  0  0  0  0
    2.0000    0.5000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
  2  4  2  0  0  0  0
  3  4  2  0  0  0  0
M  CHG  3   1   2   2  -1   3  -1
M  END

$$$$