Showing structure for (1s)-2-[(1r,4ar,5s,6r,8s,8ar)-8-hydroxy-8a-(hydroxymethyl)-5,6-dimethyl-hexahydro-2h-spiro[naphthalene-1,2'-oxiran]-5-yl]-1-(5-oxo-2h-furan-3-yl)ethyl (2s)-2-methylbutanoate