MF4
  -OEChem-05032420393D

  5  4  0     0  0  0  0  0  0999 V2000
   77.8350   54.2210  -10.5900 Mg  0  6  0  0  0  0  0  0  0  0  0  0
   77.8080   53.4210  -12.1740 F   0  0  0  0  0  0  0  0  0  0  0  0
   76.9310   55.7460  -10.6930 F   0  0  0  0  0  0  0  0  0  0  0  0
   79.5000   54.5600  -10.1160 F   0  0  0  0  0  0  0  0  0  0  0  0
   77.0870   53.1790   -9.3760 F   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  3  1  0  0  0  0
  1  4  1  0  0  0  0
  1  5  1  0  0  0  0
M  CHG  1   1  -2
M  END
> <OPENEYE_ISO_SMILES>
F[Mg-2](F)(F)F

> <OPENEYE_INCHI>
InChI=1S/4FH.Mg/h4*1H;/q;;;;+2/p-4

> <OPENEYE_INCHIKEY>
XVYWAXYEHHUKQW-UHFFFAOYSA-J

> <FORMULA>
F4Mg-2

$$$$