F3S
  -OEChem-04122417553D

  7  9  0     0  0  0  0  0  0999 V2000
    9.9700    0.1830    2.5430 Fe  0  0  0  0  0  0  0  0  0  0  0  0
    8.2340    0.4670    4.5910 Fe  0  0  0  0  0  0  0  0  0  0  0  0
    7.5010   -1.0300    2.3580 Fe  0  0  0  0  0  0  0  0  0  0  0  0
    9.5740    2.0480    3.6970 S   0  0  0  0  0  0  0  0  0  0  0  0
    8.5670    0.1180    0.6890 S   0  0  0  0  0  0  0  0  0  0  0  0
    9.1670   -1.5390    3.8820 S   0  4  0  0  0  0  0  0  0  0  0  0
    6.2870    0.4940    3.4160 S   0  0  0  0  0  0  0  0  0  0  0  0
  1  4  1  0  0  0  0
  1  5  1  0  0  0  0
  1  6  1  0  0  0  0
  2  4  1  0  0  0  0
  2  6  1  0  0  0  0
  2  7  1  0  0  0  0
  3  5  1  0  0  0  0
  3  6  1  0  0  0  0
  3  7  1  0  0  0  0
M  RAD  1   6   2
M  END
> <OPENEYE_ISO_SMILES>
S1[Fe]2S[Fe]3[S]2[Fe]1S3

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

> <OPENEYE_INCHIKEY>
FCXHZBQOKRZXKS-UHFFFAOYSA-N

> <FORMULA>
Fe3S4

$$$$