Synonyms: Benzo(a)naphthacene-2-carboxylic acid, 5-((4,6-dideoxy-4-(methylamino)-3-O-beta-D-xylopyranosyl-beta-D-galactopyranosyl)oxy)-5,6,8,13-tetrahydro-1,6,9,14-tetrahydroxy-11-methoxy-3-methyl-8,13-dioxo-, ;Benzo[a]naphthacene-2-carboxylic acid, 5-[[4,6-dideoxy-4-(methylamino)-3-O-.beta.-D-xylopyranosyl-.beta.-D-galactopyranosyl]oxy]-5,6,8,13-tetrahydro-1,6,9,14-tetrahydroxy-11-methoxy-3-methyl-8,13-diox;carboxymethyl ester, (5S-trans)-;o-, carboxymethyl ester, (5S-trans)-