9S8
  -OEChem-04192423143D

  8 10  0     1  0  0  0  0  0999 V2000
  152.5110  117.7960    0.6380 S   0  4  1  0  0  0  0  0  0  0  0  0
  150.7060  116.6440    0.5220 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  152.4310  115.5130   -0.3650 S   0  0  0  0  0  0  0  0  0  0  0  0
  153.6900  117.2040   -1.0330 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  155.0830  117.9080    0.5830 S   0  0  0  0  0  0  0  0  0  0  0  0
  155.9990  119.6300   -0.4880 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  154.2670  119.1760   -1.6310 S   0  4  2  0  0  0  0  0  0  0  0  0
  152.6130  119.7090   -0.3490 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  4  1  0  0  0  0
  1  8  1  0  0  0  0
  2  3  1  0  0  0  0
  3  4  1  0  0  0  0
  4  5  1  0  0  0  0
  4  7  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  1  0  0  0  0
  7  8  1  0  0  0  0
M  RAD  2   1   2   7   2
M  END
> <OPENEYE_ISO_SMILES>
S1[Fe][S@]2[Fe]13S[Fe][S@@]3[Fe]2

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

> <OPENEYE_INCHIKEY>
LJBDFODJNLIPKO-UHFFFAOYSA-N

> <FORMULA>
Fe4S4

$$$$