Showing structure for (1'r,3s,3as,4s,4's,4ar,7's,7as,8s,9r,9ar)-9-hydroxy-7'-(2-hydroxypropan-2-yl)-4a,5',8-trimethyl-2,5-dioxo-3a,4,7a,8,9,9a-hexahydrospiro[azuleno[6,5-b]furan-3,2'-bicyclo[2.2.2]octan]-5'-en-4-yl (2z)-2-methylbut-2-enoate