U9S
  -OEChem-05172420583D

 13 13  0     1  0  0  0  0  0999 V2000
   -1.4670    0.1940   -0.0250 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.7640   -0.9030    0.7310 C   0  0  2  0  0  0  0  0  0  0  0  0
    0.7660   -0.9020    0.7320 C   0  0  2  0  0  0  0  0  0  0  0  0
    1.4680    0.1970   -0.0240 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.1390   -0.0730   -0.9930 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.3500    1.4690    0.3790 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.1410   -0.0700   -0.9910 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.3440    1.4720    0.3770 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0020   -1.8460   -0.0220 O   0  0  0  0  0  0  0  0  0  0  0  0
   -1.2720   -1.2610    1.6270 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.2740   -1.2590    1.6280 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.8200    2.1380   -0.1380 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.8130    2.1420   -0.1390 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  5  2  0  0  0  0
  4  7  2  0  0  0  0
  1  6  1  0  0  0  0
  1  2  1  0  0  0  0
  4  8  1  0  0  0  0
  3  4  1  0  0  0  0
  2  3  1  0  0  0  0
  2  9  1  0  0  0  0
  3  9  1  0  0  0  0
  2 10  1  0  0  0  0
  3 11  1  0  0  0  0
  6 12  1  0  0  0  0
  8 13  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
[C@@H]1([C@H](O1)C(=O)O)C(=O)O

> <OPENEYE_INCHI>
InChI=1S/C4H4O5/c5-3(6)1-2(9-1)4(7)8/h1-2H,(H,5,6)(H,7,8)/t1-,2+

> <OPENEYE_INCHIKEY>
DCEMCPAKSGRHCN-XIXRPRMCSA-N

> <FORMULA>
C4H4O5

$$$$