This image of a simple structural formula is ineligible for copyright and therefore in the public domain, because it consists entirely of information that is common property and contains no original authorship.
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{{Information |Description={{en|en:Skeletal structure of helvetane, a en:geometric isomer of [12]prismane}} |Source={{Own}} |Date={{subst:CURRENTYEAR}}-{{subst:CURRENTMONTH}}-{{subst:CURRENTDAY2}} |Author=~~~ |Other_versio...