rac-(3aR,4R,5aS,9aR,12R,12aR,12bS,12cS)-12-hydroxy-2,2,4,12c-tetramethyldecahydro-5H-[1,3]dioxolo[4'',5'':3',4']benzo[1',2':2,3]cyclopenta[1,4]cyclobuta[1,2-b][1,4]oxathiine 6,6-dioxide

3-[2-((3aS,7R,7aR)-2,2,3a,7-Tetramethyl-3a,6,7,7a-tetrahydro-benzo[1,3]dioxole-5-sulfonyl)-ethoxy]-cyclopent-2-enone