5,12-Naphthacenedione, 10-[(3-amino-2,3,6-trideoxy-.alpha.-L-lyxo-hexopyranosyl)oxy]-7,8,9,10-tetrahydro-6,8,11-trihydroxy-1-methoxy-8-[2-(4-methyl-1-piperazinyl)-4-thiazolyl]-, (8S-cis)- NSC268706