17H-18,7a,10-(Epoxyethanylylidene)-2H-pyrano02',3':4,5-benzofuro03,2-e-02-benzoxacycloundecin-8,15,20-trione, 2-(3,4-dihydroxyphenyl)-3,4,18,18a-tetrahydro-3,5,9,11,12,13-hexahydroxy-17-(5,8,9,11-tetrahydro-1,2,3,8,13,14,15-hexahydroxy-5,11-dioxo-7H-dibenz)