4-HO-MALT also known as 4-Acetoxy-MALT is a relatively uncommon and very rare substance from the tryptamine class and is similar to 4-acetoxy-DMT and 5-MeO-MALT. 4-HO-MALT molecular structure and pharmacological effects somewhat resemble those of the tryptamine psilocin, which is the primary psychoactive chemical in magic mushrooms. Psilocybin mushrooms, better known as magic mushrooms, psychedelic mushrooms, magic mushrooms, and shrooms are a family of psychoactive mushrooms that contain psilocybin, a psychedelic class of tryptamine. Psilocin is a naturally-occurring psychedelic substance and the primary psychoactive constituent in certain species of mushrooms. Psilocybin mushrooms occur on all continents and are classified into more than 200 species.