Showing structure for 4a-(5,7-dihydroxy-4-oxochromen-2-yl)-5-{[5-(hydroxymethyl)-5,8a-dimethyl-2-methylidene-3-oxo-hexahydronaphthalen-1-yl]methyl}-2-methoxy-6-methyl-8,8a-dihydro-5h-naphthalene-1,4-dione