2-Anthracenebutanoic acid, 6-(2,6-dideoxy-4-O-(5-((5,6-dihydro-6-methyl-5-oxo-2H-pyran-2-yl)oxy)tetrahydro-6-methyl-2H-pyran-2-yl)-beta-arabino-hexopyranosyl)-beta-((5-((5,6-dihydro-6-methyl-5-oxo-2H-pyran-2-yl)oxy)tetrahydro-6-methyl-2H-pyran-2-yl)oxy)-9,10-dihydro-1,5-dihydroxy-beta-methyl-9,10-dioxo-