4PU
  -OEChem-11012420523D

  1  0  0     0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 Pu  0  0  0  0  0  0  0  0  0  0  0  0
M  CHG  1   1   4
M  END
> <OPENEYE_ISO_SMILES>
[Pu+4]

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

> <OPENEYE_INCHIKEY>
IYQHAABWBDVIEE-UHFFFAOYSA-N

> <FORMULA>
Pu+4

$$$$