Psilocin. Molecular model of the drug psilocin (C12.H16.N2.O). This psychedelic substance is present in most psychedelic mushrooms together with its phosphorylated counterpart psilocybin. The mind-altering effects of psilocin are highly variable and subjective and resemble those of LSD and DMT. Atoms are represented as spheres and are colour-coded: carbon (grey), hydrogen (white), nitrogen (blue) and oxygen (red). Illustration.