Showing structure for (1r,2r,3r,4s,5s,8r,9r,12z,14r,17s)-9-(acetyloxy)-4,5-dihydroxy-4,8,12,17-tetramethyl-16-oxo-15,18-dioxatetracyclo[12.4.0.0¹,¹⁷.0³,⁸]octadeca-6,12-dien-2-yl acetate