CUA
  -OEChem-04192423333D

  2  1  0     0  0  0  0  0  0999 V2000
    3.2510   14.8250   31.6240 Cu  0  0  0  0  0  0  0  0  0  0  0  0
    1.3990   16.4260   32.1440 Cu  0  0  0  0  0  0  0  0  0  0  0  0
  1  2  1  0  0  0  0
M  END
> <OPENEYE_ISO_SMILES>
[Cu][Cu]

> <OPENEYE_INCHI>
InChI=1S/2Cu

> <OPENEYE_INCHIKEY>
ALKZAGKDWUSJED-UHFFFAOYSA-N

> <FORMULA>
Cu2

$$$$