Showing structure for (1s,2s,6s,7r,8r,11r,13r,14s)-8-(acetyloxy)-14-hydroxy-9,14-dimethyl-5-methylidene-4-oxo-3,12-dioxatetracyclo[8.4.0.0²,⁶.0¹¹,¹³]tetradec-9-en-7-yl (2z)-2-methylbut-2-enoate