Showing structure for methyl 2-(acetyloxy)-2-[6-(furan-3-yl)-11-hydroxy-1,5,15,15-tetramethyl-8,14,17-trioxo-7-oxatetracyclo[11.3.1.0²,¹¹.0⁵,¹⁰]heptadec-9-en-16-yl]acetate