Showing structure for methyl 2-[10-(acetyloxy)-12-(furan-3-yl)-2,4,4,11-tetramethyl-16-methylidene-5-oxo-8-oxatetracyclo[7.7.0.0²,⁷.0¹¹,¹⁵]hexadec-14-en-3-yl]acetate