Showing structure for (2's,3s,3ar,5r,6r,7'r,7as)-6-ethenyl-2'-hydroxy-6,11'-dimethyl-5-(prop-1-en-2-yl)-4,5,7,7a-tetrahydro-3ah-6',8'-dioxaspiro[1-benzofuran-3,5'-tricyclo[7.4.0.0²,⁷]tridecane]-1'(13'),9',11'-trien-2-one