Showing structure for (1r,2s,3r,4s,4as,8ar)-4-[(1s)-1-(acetyloxy)-2-(5-oxo-2h-furan-3-yl)ethyl]-2,3-dihydroxy-3,4,8,8a-tetramethyl-2,4a,5,6-tetrahydro-1h-naphthalen-1-yl benzoate