RDKit          

  3  2  0  0  0  0  0  0  0  0999 V2000
    0.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
    0.0000    0.0000    0.0000 Sn  0  0  0  0  0  4  0  0  0  0  0  0
    0.0000    0.0000    0.0000 O   0  0  0  0  0  0  0  0  0  0  0  0
  1  2  2  0
  2  3  2  0
M  END
> <PUBCHEM_COMPOUND_CID>
29011

> <NAME>
Tin dioxide


$$$$