FUM
  -OEChem-04122417553D

 12 11  0     0  0  0  0  0  0999 V2000
   28.6490   28.7420   73.2740 O   0  0  0  0  0  0  0  0  0  0  0  0
   28.2650   29.7810   73.7650 C   0  0  0  0  0  0  0  0  0  0  0  0
   27.2860   30.5140   73.2280 O   0  0  0  0  0  0  0  0  0  0  0  0
   29.1080   30.4880   74.7520 C   0  0  0  0  0  0  0  0  0  0  0  0
   28.7820   31.7900   74.9060 C   0  0  0  0  0  0  0  0  0  0  0  0
   29.1660   32.4530   76.1700 C   0  0  0  0  0  0  0  0  0  0  0  0
   30.4090   32.8930   76.2250 O   0  0  0  0  0  0  0  0  0  0  0  0
   28.2890   32.8530   76.9200 O   0  0  0  0  0  0  0  0  0  0  0  0
   28.1520   28.5610   72.4850 H   0  0  0  0  0  0  0  0  0  0  0  0
   29.9080   30.0100   75.2980 H   0  0  0  0  0  0  0  0  0  0  0  0
   28.2580   32.3290   74.1310 H   0  0  0  0  0  0  0  0  0  0  0  0
   28.6500   33.5010   77.5130 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
  1  9  1  0  0  0  0
  2  3  2  0  0  0  0
  2  4  1  0  0  0  0
  4  5  2  0  0  0  0
  4 10  1  0  0  0  0
  5  6  1  0  0  0  0
  5 11  1  0  0  0  0
  6  7  2  0  0  0  0
  6  8  1  0  0  0  0
  8 12  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
C(=C/C(=O)O)\C(=O)O

> <OPENEYE_INCHI>
InChI=1S/C4H4O4/c5-3(6)1-2-4(7)8/h1-2H,(H,5,6)(H,7,8)/b2-1+

> <OPENEYE_INCHIKEY>
VZCYOOQTPOCHFL-OWOJBTEDSA-N

> <FORMULA>
C4H4O4

$$$$