Synonyms: 17,18-Dinorcrotalanan-11,15-dione,12-ethyl-14,19-dihydro-12,13-dihydroxy-19-methyl-, (12x,13x)-; Axillaridine (8CI);2H-[1,6]Dioxacycloundecino[2,3,4-gh]pyrrolizine-2,6(3H)-dione,5-ethyl-4,5,8,10,12,13,13a,13b-octahydro-4,5-dihydroxy-3-(1-methylethyl)-,[3R-(3R*,4R*,5R*,13aR*,13bR*)]-