2FU
  -OEChem-04192423133D

 10  9  0     0  0  0  0  0  0999 V2000
    0.3320    0.0000   -0.5860 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.1870    0.0000   -2.9080 O   0  0  0  0  0  0  0  0  0  0  0  0
   -0.4110   -0.0000   -1.8530 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.4110    0.0000    1.8530 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.3320   -0.0000    0.5860 C   0  0  0  0  0  0  0  0  0  0  0  0
   -0.1870   -0.0000    2.9080 O   0  0  0  0  0  0  0  0  0  0  0  0
    1.4120    0.0000   -0.5930 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4900    0.0030   -1.8460 H   0  0  0  0  0  0  0  0  0  0  0  0
    1.4900    0.0000    1.8460 H   0  0  0  0  0  0  0  0  0  0  0  0
   -1.4120   -0.0000    0.5930 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  3  1  0  0  0  0
  1  5  2  0  0  0  0
  1  7  1  0  0  0  0
  2  3  2  0  0  0  0
  3  8  1  0  0  0  0
  4  5  1  0  0  0  0
  4  6  2  0  0  0  0
  4  9  1  0  0  0  0
  5 10  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
C(=C/C=O)\C=O

> <OPENEYE_INCHI>
InChI=1S/C4H4O2/c5-3-1-2-4-6/h1-4H/b2-1+

> <OPENEYE_INCHIKEY>
JGEMYUOFGVHXKV-OWOJBTEDSA-N

> <FORMULA>
C4H4O2

$$$$