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