PT4
  -OEChem-04122417553D

  1  0  0     0  0  0  0  0  0999 V2000
   58.0890   10.7720   23.6300 Pt  0  0  0  0  0  0  0  0  0  0  0  0
M  CHG  1   1   4
M  END
> <OPENEYE_ISO_SMILES>
[Pt+4]

> <OPENEYE_INCHI>
InChI=1S/Pt/q+4

> <OPENEYE_INCHIKEY>
NDBYXKQCPYUOMI-UHFFFAOYSA-N

> <FORMULA>
Pt+4

$$$$