ETD
  -OEChem-01282220153D

  4  3  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000   -0.5870 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.5870 C   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000   -1.6370 H   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    1.6370 H   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  3  0  0  0  0
  1  3  1  0  0  0  0
  2  4  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
C#C

> <OPENEYE_INCHI>
InChI=1S/C2H2/c1-2/h1-2H

> <OPENEYE_INCHIKEY>
HSFWRNGVRCDJHI-UHFFFAOYSA-N

> <FORMULA>
C2H2

$$$$