Showing structure for 17-hydroxy-6,6,10,14,18-pentamethyl-15-[1-(4-methyl-5-oxooxolan-2-yl)prop-1-en-2-yl]-2-oxapentacyclo[9.7.0.0¹,³.0⁵,¹⁰.0¹⁴,¹⁸]octadec-11-ene-7,13-dione