Showing structure for (3ar,4s,6s,7r,7ar)-6-ethenyl-6-methyl-3-methylidene-2-oxo-7-(3-oxoprop-1-en-2-yl)-tetrahydro-3ah-1-benzofuran-4-yl (3r)-3,4-dihydroxy-2-methylidenebutanoate