FSX
  -OEChem-05102419313D

 10 14  0     0  0  0  0  0  0999 V2000
   37.5970   44.0420    8.8940 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   40.3100   45.1040    7.6470 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   38.8950   42.5990   10.7780 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   40.2750   42.1020    8.4570 Fe  0  0  0  0  0  0  0  0  0  0  0  0
   40.8990   45.5050    9.6490 O   0  4  0  0  0  0  0  0  0  0  0  0
   38.1480   44.6710   10.9430 S   0  0  0  0  0  0  0  0  0  0  0  0
   38.0140   41.7880    8.8440 S   0  4  0  0  0  0  0  0  0  0  0  0
   41.1080   42.6160   10.4390 S   0  0  0  0  0  0  0  0  0  0  0  0
   40.6040   43.3650    7.1570 O   0  0  0  0  0  0  0  0  0  0  0  0
   38.4540   45.0260    7.6060 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  3  1  0  0  0  0
  1  6  1  0  0  0  0
  1  7  1  0  0  0  0
  1 10  1  0  0  0  0
  2  5  1  0  0  0  0
  2  9  1  0  0  0  0
  2 10  1  0  0  0  0
  3  4  1  0  0  0  0
  3  6  1  0  0  0  0
  3  7  1  0  0  0  0
  3  8  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  2   5   2   7   2
M  END
> <OPENEYE_ISO_SMILES>
[O][Fe]1O[Fe]23S[Fe]245[S]3[Fe]4(O1)S5

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

> <OPENEYE_INCHIKEY>
ZQLRLDZHBVOAFB-UHFFFAOYSA-N

> <FORMULA>
Fe4O3S3

$$$$