Showing structure for (1s,2s,3s,4s,7s,8z,11r,12s,13r,16r,17s)-2-(acetyloxy)-3,4,12,16,17-pentahydroxy-4,9,13,17-tetramethyl-5-oxo-6-oxatricyclo[11.4.0.0³,⁷]heptadeca-8,14-dien-11-yl acetate