Showing structure for methyl 2-(acetyloxy)-2-[13-(5-hydroxy-2-oxo-5h-furan-3-yl)-6,6,8,12-tetramethyl-17-methylidene-5,15-dioxo-2,14-dioxatetracyclo[7.7.1.0¹,¹².0³,⁸]heptadecan-7-yl]acetate