10-(4-O-acetyl-2,3,6-trideoxy-3-(dimethylamino)- 3-C-methyl-alpha-L-lyxo-hexopyranosyl)-11-hydroxy-5-methyl-2-(2-methyl-3-(1-propenyl)oxir anyl)-8-(2,3,6-trideoxy-3-(dimethylamino)-beta-D- arabino-hexopyranosyl)-4H-anthra(1,2-b)pyran- 4,7,12-trione