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