1-Naphthacenecarboxylic acid,4-[[[2''',3''-anhydro]-O-3,6-dideoxy-.alpha.-L-erythro-hexopyranos-4-ulos-1-yl-(1.fwdarw.4)-O-2,6-dideoxy-.alpha.-L-lyxo-hexopyranosyl-(1.fwdarw.4)-2,3,6-trideoxy-3-(dimethylamino)-.alpha.-L-lyxo-hexopyranosyl]oxy]-2-ethyl-1,2,3,4,6,11-hexahydro-2,5,7-trihydroxy-6,11-dioxo-, methyl ester,[1R-(1.alpha.,2.beta.,4.beta.)]- 57596-79-9 ACLACINOMYCIN B Antibiotic MA144 B1 Antibiotic MA144-B1 MA 144-B1 MA 144B1 NSC208735