OKG
  -OEChem-05102419543D

 14 13  0     0  0  0  0  0  0999 V2000
    7.9010    0.2910   24.4690 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.8310    0.3570   23.8360 C   0  0  0  0  0  0  0  0  0  0  0  0
    5.8540   -0.3790   24.1150 O   0  0  0  0  0  0  0  0  0  0  0  0
    6.7110    1.3640   22.7090 C   0  0  0  0  0  0  0  0  0  0  0  0
    8.0930    1.8020   22.2080 C   0  0  0  0  0  0  0  0  0  0  0  0
    7.9850    2.8950   21.1770 C   0  0  0  0  0  0  0  0  0  0  0  0
    6.6630    3.6530   20.9990 O   0  0  0  0  0  0  0  0  0  0  0  0
    8.8570    4.4210   19.5610 O   0  5  0  0  0  0  0  0  0  0  0  0
    9.0190    3.2650   20.4000 O   0  0  0  0  0  0  0  0  0  0  0  0
    7.8290   -0.3720   25.1450 H   0  0  0  0  0  0  0  0  0  0  0  0
    6.1650    2.2470   23.0730 H   0  0  0  0  0  0  0  0  0  0  0  0
    6.1560    0.9070   21.8770 H   0  0  0  0  0  0  0  0  0  0  0  0
    8.6020    0.9360   21.7590 H   0  0  0  0  0  0  0  0  0  0  0  0
    8.6820    2.1720   23.0610 H   0  0  0  0  0  0  0  0  0  0  0  0
  8  9  1  0  0  0  0
  6  9  1  0  0  0  0
  6  7  2  0  0  0  0
  5  6  1  0  0  0  0
  4  5  1  0  0  0  0
  2  4  1  0  0  0  0
  2  3  2  0  0  0  0
  1  2  1  0  0  0  0
  1 10  1  0  0  0  0
  4 11  1  0  0  0  0
  4 12  1  0  0  0  0
  5 13  1  0  0  0  0
  5 14  1  0  0  0  0
M  CHG  1   8  -1
M  END
> <OPENEYE_ISO_SMILES>
C(CC(=O)O[O-])C(=O)O

> <OPENEYE_INCHI>
InChI=1S/C4H6O5/c5-3(6)1-2-4(7)9-8/h8H,1-2H2,(H,5,6)/p-1

> <OPENEYE_INCHIKEY>
WBOQHFMXKCEWSQ-UHFFFAOYSA-M

> <FORMULA>
C4H5O5-

$$$$