RH
  -OEChem-04192423173D

  1  0  0     0  0  0  0  0  0999 V2000
    0.0020   -0.0040    0.0020 Rh  0  3  0  0  0  0  0  0  0  0  0  0
M  CHG  1   1   1
M  END
> <OPENEYE_ISO_SMILES>
[Rh+]

> <OPENEYE_INCHI>
InChI=1S/Rh/q+1

> <OPENEYE_INCHIKEY>
OBDSITLACDGNMC-UHFFFAOYSA-N

> <FORMULA>
Rh+

$$$$