188926-26-3 4,8-Dioxa-3,9-disilaundecane,2,2,3,3,9,9,10,10-octamethyl-5-[(1R,2E)-1-methyl-3-phenyl-2-propenyl]-, (5S)- 51212-98-7 [8-(acetyloxy)-3-methylidene-2,6-dioxo-2,3,3a,4,8,9,10,12a-octahydro-4,7-(metheno)furo[3,2-c]oxacycloundecin-11(6H)-yl]methyl acetate 23753-57-3 (1aS,7R,7aR,10aS,11aS)-1a,2,3,7a,8,10a,11,11a-Octahydro-11a-methyl-8-methylene-5H-7,4-methenofuro[3,2-c]oxireno[f]oxacycloundecin-5,9(7H)-dione