(5R,6R,9a1R,14aR,Z)-3-ethylidene-6-hydroxy-5,6-dimethyl-2,7-dioxo-3,4,5,6,7,9,9a1,11,12,13,14,14a-dodecahydro-2H-[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine 12-oxide; (3Z,5R,6R,14aR,14bR)-3-Ethylidene-3,4,5,6,9,11,13,14,14a,14b-decahydro-6-hydroxy-5,6-dimethyl-[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine-2,7-dione 12-Oxide; 12-Hydroxy-senecionan-11,16-dione 4-Oxide; NSC 106677; Senecionine Oxide; (3Z,5R,6R,14aR,14bR)-[partial]-3-Ethylidene-3,4,5,6,9,11,13,14,14a,14b-decahydro-6-hydroxy-5,6-dimethyl-[1,6]dioxacyclododecino[2,3,4-gh]pyrrolizine-2,7-dione 12-Oxide