Showing structure for 4-hydroxy-5'-(2-{3-[1-hydroxy-2-(2-oxooxolan-3-ylidene)ethyl]-2,2-dimethyl-4-methylidenecyclohexyl}ethyl)-1,5,5-trimethyl-3,6-dioxaspiro[bicyclo[2.2.2]octane-2,2'-oxan]-8-one