Showing structure for (1s,2r,3s,4r,7s,8z,12s,13s,14s,16s,18r)-12-(acetyloxy)-2,3-dihydroxy-4,9,13,18-tetramethyl-5-oxo-6,17-dioxatetracyclo[11.5.0.0³,⁷.0¹⁶,¹⁸]octadec-8-en-14-yl acetate