Synonyms: Jacobine(6CI,7CI,8CI); Senecionan-11,16-dione, 15,20-epoxy-15,20-dihydro-12-hydroxy-,(15a,20S)-; NSC 89936;Spiro[[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine-3(2H),2'-oxirane]-2,7(4H)-dione,5,6,9,11,13,14,14a,14b-octahydro-6-hydroxy-3',5,6-trimethyl-,[3S-[3R*(R*),5S*,6S*,14aS*,14bS*]]-