CMO
  -OEChem-05032420083D

  2  1  0     0  0  0  0  0  0999 V2000
    0.6070    0.0000    0.0000 C   0  5  0  0  0  0  0  0  0  0  0  0
   -0.6000    0.0000    0.0000 O   0  3  0  0  0  0  0  0  0  0  0  0
  1  2  3  0  0  0  0
M  CHG  2   1  -1   2   1
M  END
> <OPENEYE_ISO_SMILES>
[C-]#[O+]

> <OPENEYE_INCHI>
InChI=1S/CO/c1-2

> <OPENEYE_INCHIKEY>
UGFAIRIUMAVXCW-UHFFFAOYSA-N

> <FORMULA>
CO

$$$$