Showing structure for 7-ethylidene-8-hydroxy-4,11-dimethyl-16-methylidene-6,15-dioxo-5,14,17-trioxatetracyclo[9.5.1.0¹,¹³.0⁴,⁸]heptadec-12-en-2-yl 2-(hydroxymethyl)prop-2-enoate