Showing structure for 20-hydroxy-8,8,14,15,19,19-hexamethyl-10-[(3-methylbut-2-enoyl)oxy]-21-oxahexacyclo[18.2.2.0¹,¹⁸.0²,¹⁵.0⁵,¹⁴.0⁶,¹¹]tetracos-4-ene-11-carboxylic acid