1,5-Epoxynaphthacene-7,10,12(2H)-trione, 2-[[(2R,5R,6S)-5-[(4-C-acetyl-2,6-dideoxy-α-D-xylo-hexopyranosyl)oxy]tetrahydro-6-methyl-2H-pyran-2-yl]oxy]-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-α-D-ribo-hexopyranosyl)oxy]-6,6a,7,8,9,10,10a,11-octahydro-1,8,10,10a,12-pentahydroxy-3,4-dimethoxy-11-oxo-10-propyl-2-naphthacenyl]-4-[(2,6-dideoxy-α-D-ribo-hexopyranosyl)oxy]-1,3,4,4a,5,12a-hexahydro-3,6,11,12a-tetrahydroxy-8-methoxy-1-propyl-, rel-