SO3
  -OEChem-04192423173D

  4  3  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.4160 S   0  0  0  0  0  0  0  0  0  0  0  0
   -0.0990   -1.3130   -0.2780 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.1870    0.5700   -0.2780 O   0  5  0  0  0  0  0  0  0  0  0  0
   -1.0870    0.7420   -0.2780 O   0  5  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
  1  3  1  0  0  0  0
  1  4  1  0  0  0  0
M  CHG  2   3  -1   4  -1
M  END
> <OPENEYE_ISO_SMILES>
[O-]S(=O)[O-]

> <OPENEYE_INCHI>
InChI=1S/H2O3S/c1-4(2)3/h(H2,1,2,3)/p-2

> <OPENEYE_INCHIKEY>
LSNNMFCWUKXFEE-UHFFFAOYSA-L

> <FORMULA>
O3S-2

$$$$