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1-Naphthacenecarboxylicacid,2-ethyl-1,2,3,4,6,11-hexahydro-2,5,7,10-tetrahydroxy-6,11-dioxo-4-[[2,3,6-trideoxy-4-O-[2-deoxy-4-O-[(2R,6S)-tetrahydro-6-methyl-5-oxo-2H-pyran-2-yl]-b-D-erythro-pentopyran related products: