File:Butyrfentanyl.png
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![File:Butyrfentanyl.png](http://upload.wikimedia.org/wikipedia/commons/thumb/9/9b/Butyrfentanyl.png/800px-Butyrfentanyl.png)
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Date/Time | Thumbnail | Dimensions | User | Comment | |
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current | 17:49, 18 December 2013 | ![]() | 1,416 × 918 (70 KB) | DMacks | {{Information |Description={{en|en:Skeletal structure of en:butyrfentanyl}} |Source={{Own}} |Date={{subst:CURRENTYEAR}}-{{subst:CURRENTMONTH}}-{{subst:CURRENTDAY2}} |Author=~~~ |Other_versions= }} {{PD-chem}} |
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