Y3P
  -OEChem-05102419343D

 13 12  0     0  0  0  0  0  0999 V2000
   -1.8770   -0.2930   -0.0070 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.9110    0.5690   -0.0570 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4870    0.2190    0.0340 C   0  0  0  0  0  0  0  0  0  0  0  0
   -2.0840   -1.4890    0.0090 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.5510   -0.6460    0.0840 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.2570    1.5520    0.0210 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.9270   -0.1450    0.0060 C   0  0  0  0  0  0  0  0  0  0  0  0
    2.1390    1.0520    0.0040 O   0  0  0  0  0  0  0  0  0  0  0  0
    2.9570   -1.0120   -0.0630 O   0  0  0  0  0  0  0  0  0  0  0  0
   -3.7990    0.1870   -0.0820 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.3670   -1.7050    0.1820 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.6790    1.7890   -0.0370 H   0  0  0  0  0  0  0  0  0  0  0  0
    3.8460   -0.6350   -0.1130 H   0  0  0  0  0  0  0  0  0  0  0  0
  3  6  1  0  0  0  0
  7  8  2  0  0  0  0
  1  3  1  0  0  0  0
  3  5  2  0  0  0  0
  5  7  1  0  0  0  0
  7  9  1  0  0  0  0
  1  4  2  0  0  0  0
  1  2  1  0  0  0  0
  2 10  1  0  0  0  0
  5 11  1  0  0  0  0
  6 12  1  0  0  0  0
  9 13  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
C(=C(/C(=O)O)\O)\C(=O)O

> <OPENEYE_INCHI>
InChI=1S/C4H4O5/c5-2(4(8)9)1-3(6)7/h1,5H,(H,6,7)(H,8,9)/b2-1-

> <OPENEYE_INCHIKEY>
UWYVPFMHMJIBHE-UPHRSURJSA-N

> <FORMULA>
C4H4O5

$$$$