Showing structure for 15-[4-(3,3-dimethyloxiran-2-yl)-4-oxobutan-2-yl]-6,18-dihydroxy-7,7,12,16-tetramethylpentacyclo[9.7.0.0¹,³.0³,⁸.0¹²,¹⁶]octadec-10-en-14-one