IUM
  -OEChem-04192423163D

  3  2  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 U   0  0  0  0  0  0  0  0  0  0  0  0
   -2.2200    0.0000    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0
    2.2200    0.0000    0.0000 O   0  5  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  3  1  0  0  0  0
M  CHG  3   1   4   2  -1   3  -1
M  END
> <OPENEYE_ISO_SMILES>
[O-][U+4][O-]

> <OPENEYE_INCHI>
InChI=1S/2O.U/q2*-1;+4

> <OPENEYE_INCHIKEY>
SUPITXAKBSTVAN-UHFFFAOYSA-N

> <FORMULA>
O2U+2

$$$$