C1O
  -OEChem-04262420143D

  2  1  0     0  0  0  0  0  0999 V2000
   34.6500   11.7360   57.0420 Cu  0  0  0  0  0  0  0  0  0  0  0  0
   33.2390   11.9450   58.4830 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
O=[Cu]

> <OPENEYE_INCHI>
InChI=1S/Cu.O

> <OPENEYE_INCHIKEY>
QPLDLSVMHZLSFG-UHFFFAOYSA-N

> <FORMULA>
CuO

$$$$