Synonyms: 5,12-Naphthacenedione,10-[[[2''',3''-anhydro]-O-3,6-dideoxy-a-L-erythro-hexopyranos-4-ulos-1-yl-(1®4)-O-2,6-dideoxy-a-L-lyxo-hexopyranosyl-(1®4)-2,3,6-trideoxy-3-(dimethylamino)-a-L-lyxo-hexopyranosyl]oxy]-8-ethyl-7,8,9,10-tetrahydro-1,6,7,8,11-pentahydroxy-,[7R-(7a,8b,10b)]-; 2H,7H-Dipyrano[2,3-b:4',3'-e][1,4]dioxin, 5,12-naphthacenedionederiv.; Betaclamycin B