[2-(4-{[9a-(acetyloxy)-4a,7b-dihydroxy-3-(hydroxymethyl)-1,1,6,8-tetramethyl-5-oxo-1a,1b,4,4a,5,7a,7b,8,9,9a-decahydro-1H-cyclopropa[3,4]benzo[1,2-e]azulen-9-yl]oxy}-4-oxobutyl)-4,4-dimethyl-2-undecyl-1,3-oxazolidin-3-yl]oxidanyl