Showing structure for (1r,2s,6s,7s,8r,11r,12s,14s,15r,18r,20s)-20-hydroxy-7,8,14,15,19,19-hexamethyl-12-{[(2z)-2-methylbut-2-enoyl]oxy}-3-oxo-21-oxahexacyclo[18.2.2.0¹,¹⁸.0²,¹⁵.0⁵,¹⁴.0⁶,¹¹]tetracos-4-ene-11-carboxylic acid