1-Naphthacenecarboxylic acid, 4-((4-O-(4-O-((2S-(2alpha,5alpha,6beta))-5-aminotetrahydro-6-methyl-2H-pyran-2-yl)-2,6-dideoxy-alpha-L-lyxo-hexopyranosyl)-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-(1alpha,2beta,4beta))-