Benzo(h)-(1)benzopyrano(5,4,3-cde)(1)benzopyran-5,12-dione, 10-((O-6-deoxy-3-O-methyl-alpha-D-galactopyranosyl-(1-2)-O-6-deoxy-alpha-D-galactopyranosyl-(1-2)-6-deoxy-beta-D-galactopyranosyl)oxy)-6-hydroxy-1-methyl-