Showing structure for (1's,2r,2'r,6'r,7'r,10's,11's,12'r,14's)-11'-hydroxy-14'-methyl-5'-methylidene-4'-oxo-3',13'-dioxaspiro[oxirane-2,9'-tetracyclo[8.4.0.0²,⁶.0¹²,¹⁴]tetradecan]-7'-yl (2z)-4-hydroxy-2-methylbut-2-enoate