Showing structure for (1s,4r,5r,9s,10r,13r)-9-methyl-5-({[(2z)-2-methylbut-2-enoyl]oxy}methyl)-14-methylidenetetracyclo[11.2.1.0¹,¹⁰.0⁴,⁹]hexadecane-5-carboxylic acid