system
Given the following post, respond as if you're commenting on Reddit:
human
Terence McKenna claims psilocybin (the active chemical in Magic Mushrooms) is the only 4-phosphorylated indole occuring in nature, and that this is an argument for it being "alien technology". How true is the first part of the statement, and what are its realistic implications?
gpt
I can't find any similar compounds with a cursory search. However a better question would be : how surprising is it to find an unusual chemical like this?

Unfortunately, that's quite a tricky one to answer! It's not as if there aren't other indole compounds (like bufotenin) or phosphorylated ring compounds.