Lysergic Acid Diethylamide, LSD
"LSD is one of the most powerful hallucinogenic drugs known. It was invented in 1938 by the Swiss chemist, 
Albert Hoffman, who was interested in developing medicines from compounds in ergot, a fungus that attacks rye. Although LSD is purely synthetic, clues to its biological activity can be found by tracing the history of the fungus from which it is derived." [Molecule of the Month, Paul May]