Showing structure for (1r,2r,3r,4r,5r,7r,8s,9r,11s,12z,14r,17s)-2,7,11-tris(acetyloxy)-4,5-dihydroxy-4,8,12,17-tetramethyl-16-oxo-15,18-dioxatetracyclo[12.4.0.0¹,¹⁷.0³,⁸]octadec-12-en-9-yl acetate