Showing structure for 4a-(5,7-dihydroxy-4-oxochromen-2-yl)-2-methoxy-6-methyl-5-[(1,2,7-trihydroxy-2,5,5,8a-tetramethyl-hexahydronaphthalen-1-yl)methyl]-8,8a-dihydro-5h-naphthalene-1,4-dione