Showing structure for 17-hydroxy-2,8,10,14,18,18-hexamethyl-6-(2-methylprop-1-en-1-yl)-5-oxapentacyclo[11.8.0.0²,¹⁰.0⁴,⁹.0¹⁴,¹⁹]henicos-1(13)-en-7-yl acetate