Psilocybin is not active, but is converted to active psilocin by dephosphorylation when it is digested. Mushrooms also contain some psilocin. There is active research into the effect of other tryptamines in mushrooms, including, baeocystin, norbaeocystin, and norpsilocin, and others.

(note - "in mice")

https://pubmed.ncbi.nlm.nih.gov/32077284/