Showing structure for 6-[5-(2-hydroxypropan-2-yl)-2-oxo-5h-furan-3-yl]-10-(2-methoxy-2-oxoethyl)-7,9,11,15-tetramethyl-3,17-dioxapentacyclo[9.6.1.0²,⁹.0⁴,⁸.0¹⁵,¹⁸]octadec-7-en-14-yl 3-methylbut-2-enoate