July 2012 (UTC) 
 :The image is presumably not eligible for copyright, but consider participating in the discussion at Wikipedia:Possibly unfree files/2012 July 16#File:IUPAC example Single-Strand Inorganic Polymer.png. A user is questioning whether the image is useful. Note that chemistry images such as this one preferably should be made in SVG format instead of PNG.   10:15, 18