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1,5-Epoxynaphthacene-7,10,12(2H)-trione,9-[9-[[(2R,5R,6S)-5-[[(2S,5R,6R)-5-acetyltetrahydro-5-hydroxy-6-methyl-2H-pyran-2-yl]oxy]tetrahydro-6-methyl-2H-pyran-2-yl]oxy]-7-[(2,6-dideoxy-a-D-ribo-hexopyr related products: