OXL
  -OEChem-04192423173D

  6  5  0     0  0  0  0  0  0999 V2000
    0.7470    0.0000    0.0020 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7470    0.0000    0.0000 C   0  0  0  0  0  0  0  0  0  0  0  0
    1.3850   -1.1050    0.0010 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3850   -1.1050   -0.0020 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.3850    1.1050   -0.0020 O   0  5  0  0  0  0  0  0  0  0  0  0
   -1.3850    1.1050    0.0010 O   0  5  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  3  2  0  0  0  0
  1  5  1  0  0  0  0
  2  4  2  0  0  0  0
  2  6  1  0  0  0  0
M  CHG  2   5  -1   6  -1
M  END
> <OPENEYE_ISO_SMILES>
C(=O)(C(=O)[O-])[O-]

> <OPENEYE_INCHI>
InChI=1S/C2H2O4/c3-1(4)2(5)6/h(H,3,4)(H,5,6)/p-2

> <OPENEYE_INCHIKEY>
MUBZPKHOEPUJKR-UHFFFAOYSA-L

> <FORMULA>
C2O4-2

$$$$