An organic heteropentacyclic compound and furan diterpenoid with formula C20H28O3 obtained from the unsaponifiable fraction of coffee oil (a lipid fraction obtained from coffee beans by organic solvent extraction). ChEBI: Cafestol is an organic heteropentacyclic compound and furan diterpenoid with formula C20H28O3 obtained from the unsaponifiable fraction of coffee oil (a lipid fraction obtained from coffee beans by organic solvent extraction). It has a role as a plant metabolite, an apoptosis inducer, a hypoglycemic agent, an angiogenesis inhibitor, an antineoplastic agent, an antioxidant and an anti-inflammatory agent. It is an organic heteropentacyclic compound, a tertiary alcohol, a diterpenoid, a member of furans and a primary alcohol.