2,6-Epoxy-2H-naphthaceno(1,2-b)oxocin-14-carboxylic acid, 4-(dimethylamino)-3,4,5,6,9,11,12,13,14,16-decahydro-3,5,8,10,13-pentahydroxy-11-methoxy-6,13-dimethyl-9,16-dioxo-, methyl ester, (2R-(2alpha,3beta,4alpha,5beta,6alpha,11alpha,13alpha))- 71628-93-8