Showing structure for 15-[4-(3,3-dimethyloxiran-2-yl)-4-hydroxybutan-2-yl]-6,6,10,14,18-pentamethyl-2-oxapentacyclo[9.7.0.0¹,³.0⁵,¹⁰.0¹⁴,¹⁸]octadecan-7-one