Noun
forbesione (uncountable)
(organic chemistry) A pentacyclic oxygen heterocyclic compound with IUPAC name (2R,13R,15S)-6,8-dihydroxy-17,17-dimethyl-5,15-bis(3-methylbut-2-enyl)-3,16-dioxapentacyclo[11.4.1.0.0.0]octadeca-4,6,8,11-tetraene-10,14-dione