5,12-Naphthacenedione, 7-((4-O-(3-amino-2,3,6-trideoxy-.alpha.-L-lyxo-hexopyranosyl)-2,6-dideoxy-.alpha.-L-lyxo-hexopyranosyl)oxy)-7,8,9,10-tetrahydro-6,9,11-trihydroxy-9-(hydroxyacetyl)-, (7S,9S)-