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alkaloid
ergot alkaloid
strychnine alkaloid
phenol alkaloid
alkaloid purine
alkaloid ergot
alkaloid morphine
metabolite alkaloid
potent alkaloid
alkaloid quinine
alkaloid phenolic
bioactive alkaloid
alkaloid metabolite
alkaloid potent
alkaloid phenol
alkaloid glucoside
alkaloid pyridine
purine alkaloid
morphine alkaloid
glucoside alkaloid