Methanone,(2,4-dihydroxyphenyl)[6-(2,4-dihydroxyphenyl)-2-[4-[2-(2,4-dihydroxyphenyl)ethenyl]-2,6-dihydroxyphenyl]-4-methyl-3-cyclohexen-1-yl]-,[1S-[1a,2a(E),6b]]-