OXL
  -OEChem-04192423353D

  6  5  0     0  0  0  0  0  0999 V2000
  -23.0530  -14.5790   39.9520 C   0  0  0  0  0  0  0  0  0  0  0  0
  -23.3300  -13.3080   40.7510 C   0  0  0  0  0  0  0  0  0  0  0  0
  -23.0950  -15.6680   40.6200 O   0  0  0  0  0  0  0  0  0  0  0  0
  -23.1660  -12.0110   40.6080 O   0  0  0  0  0  0  0  0  0  0  0  0
  -22.8780  -14.8850   38.7090 O   0  5  0  0  0  0  0  0  0  0  0  0
  -23.6630  -13.5390   42.0160 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

$$$$
