4H-Anthra(1,2-b)pyran-4,7,12-trione, 11-hydroxy-5-methyl-8- (2,3,6-trideoxy-3-(dimethylamino)-D-arabino-hex-1- enopyranosyl)-10-(2,3,6-trideoxy-3-(dimethylamino)-5-C- hydroxy-3-C-methylhexopyranosyl)-2-(3,3',3'-trimethyl(2,2'- bioxiran)-3-yl)-