 O-Acetylpsilocin

"O"-Acetylpsilocin (also known as psilacetin, 4-acetoxy-DMT, or 4-AcO-DMT) is a semi-synthetic psychoactive drug that has been suggested by David Nichols to be a potentially useful alternative to psilocybin for pharmacological studies, as they are both believed to be prodrugs of psilocin.However, some users report that "O"-acetylpsilocin's subjective effects differ from those of psilocybin and psilocin.