11-Hexadecenoicacid,3-[2-[4-(2,6-dimethyl-1,5-heptadienyl)-1,4,4a,5,8,8a-hexahydro-6-methoxy-5,8-dioxo-4a-(10-pentadecenyl)-2-naphthalenyl]-1,10-dihydroxy-10-methyl-7-(1-methyl-2-oxoethylidene)spiro[4.5]dec-6-yl]propylester, [1R-[1a,2a[4R*(E),4aS*(Z),8aR*