SFS
  -OEChem-06142419183D

  8 12  0     0  0  0  0  0  0999 V2000
  -29.0800    1.7380   21.8470 Se  0  4  0  0  0  0  0  0  0  0  0  0
  -31.2150    1.9190   21.6210 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  -28.9630    0.9830   19.8500 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  -29.3490   -0.2470   22.5690 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  -31.4930   -0.0410   22.3910 Se  0  4  0  0  0  0  0  0  0  0  0  0
  -31.3760   -0.7740   20.3940 Fe  0  0  0  0  0  0  0  0  0  0  0  0
  -31.1140    1.2020   19.6320 Se  0  4  0  0  0  0  0  0  0  0  0  0
  -29.2410   -1.0010   20.5790 Se  0  4  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
  2  5  1  0  0  0  0
  2  7  1  0  0  0  0
  3  7  1  0  0  0  0
  3  8  1  0  0  0  0
  4  5  1  0  0  0  0
  4  8  1  0  0  0  0
  5  6  1  0  0  0  0
  6  7  1  0  0  0  0
  6  8  1  0  0  0  0
M  RAD  4   1   2   5   2   7   2   8   2
M  END
> <OPENEYE_ISO_SMILES>
[Fe]12[Se]3[Fe]4[Se]1[Fe]5[Se]2[Fe]3[Se]45

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

> <OPENEYE_INCHIKEY>
UNSFOBCIVLZPNZ-UHFFFAOYSA-N

> <FORMULA>
Fe4Se4

$$$$