WO4
  -OEChem-10252417143D

  5  4  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 W   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000   -1.5360   -1.0860 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    1.5360   -1.0860 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.5360    0.0000    1.0860 O   0  5  0  0  0  0  0  0  0  0  0  0
    1.5360    0.0000    1.0860 O   0  5  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  1  3  2  0  0  0  0
  1  4  1  0  0  0  0
  1  5  1  0  0  0  0
M  CHG  2   4  -1   5  -1
M  END
> <OPENEYE_ISO_SMILES>
[O-][W](=O)(=O)[O-]

> <OPENEYE_INCHI>
InChI=1S/4O.W/q;;2*-1;

> <OPENEYE_INCHIKEY>
PBYZMCDFOULPGH-UHFFFAOYSA-N

> <FORMULA>
O4W-2

$$$$