Showing structure for (4as,5r,8ar)-5-{[(1s,2r,3s,4as,7s,8as)-1,2,3,7-tetrahydroxy-2,5,5,8a-tetramethyl-hexahydronaphthalen-1-yl]methyl}-4a-(5,7-dihydroxy-4-oxochromen-2-yl)-2-methoxy-6-methyl-8,8a-dihydro-5h-naphthalene-1,4-dione