(1aR,1bR,2R,3R,6S,7bR,8R,9aR)-2-((tert-butyldimethylsilyl)oxy)-1,1,3,6,8-pentamethyl-7b-((trimethylsilyl)oxy)-1a,1b,2,3,5,6,7b,8,9,9a-decahydro-1H-cyclopropa[3,4]benzo[1,2-e]azulen-6-ol