{(4aR,5S,6R,8S,8aR)-8-hydroxy-5,6-dimethyl-5-[2-(5-oxo-2,5-dihydrofuran-3-yl)ethyl]octahydro-8aH-spiro[naphthalene-1,2'-oxiran]-8a-yl}methyl (2E)-2-methylbut-2-enoate [ 124961-67-7 ]