FS2
  -OEChem-05172421163D

  9 14  0     1  0  0  0  0  0999 V2000
   20.5910   19.5580   23.9170 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   20.7450   22.2140   24.4580 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   17.2590   18.6350   24.9940 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   19.5360   20.5940   26.8540 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   20.0350   21.3270   22.6020 S   0  0  0  0  0  0  0  0  0  0  0  0
   21.6780   20.5750   25.6970 S   0  4  1  0  0  0  0  0  0  0  0  0
   18.9650   22.3420   25.5060 O   0  0  0  0  0  0  0  0  0  0  0  0
   17.7170   19.9900   26.5730 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 O   0  0  1  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  5  1  0  0  0  0
  1  6  1  0  0  0  0
  1  9  1  0  0  0  0
  2  4  1  0  0  0  0
  2  5  1  0  0  0  0
  2  6  1  0  0  0  0
  2  7  1  0  0  0  0
  3  8  1  0  0  0  0
  3  9  1  0  0  0  0
  4  6  1  0  0  0  0
  4  7  1  0  0  0  0
  4  8  1  0  0  0  0
  4  9  1  0  0  0  0
M  RAD  1   6   2
M  END
> <OPENEYE_ISO_SMILES>
O1[Fe][O@]2[Fe]134O[Fe]356[S@@]4[Fe]52S6

> <OPENEYE_INCHI>
InChI=1S/4Fe.3O.2S

> <OPENEYE_INCHIKEY>
DEAINXNPDRNZAH-UHFFFAOYSA-N

> <FORMULA>
Fe4O3S2

$$$$
