heres an actual link, ( first result from googling lead to gold) http://chemistry.about.com/cs/generalchemistry/a/aa050601a.html It is possible, ( its happened), just not practical, just like LSA to LSD. Chemistry is more complex than the letter names given to large molecules. Verbally, all you have to do is add a diethylamide, and youre there, but its much easier said than done.