Showing structure for (1r,4s,5s,6r,9s,10s,13r,16s)-6-(acetyloxy)-5,9,13-trimethyl-16-{[(2e)-2-methylbut-2-enoyl]oxy}tetracyclo[11.2.1.0¹,¹⁰.0⁴,⁹]hexadec-14-ene-5-carboxylic acid