I am verifying the answers generated by an automatic system to the following question: how was marijuana discovered
Suggested answer: Pharmacologically, the principal psychoactive constituent of cannabis is tetrahydrocannabinol (THC); it is one of 483 known compounds in the plant, including at least 84 other cannabinoids , such as cannabidiol (CBD), cannabinol (CBN), tetrahydrocannabivarin (THCV).
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