Showing structure for (3as,4r,6as,7r,8s,10as)-8-hydroxy-7-{[(5s)-5-hydroxy-3-methyl-4,5-dihydrofuran-2-yl]methyl}-7,8-dimethyl-3,5-dioxo-hexahydro-1h-naphtho[4,4a-c]furan-4-yl acetate