2-Naphthacenecarboxamide, N,N'-(1,2-ethanediylbis((methylimino)methylene))bis(4-(dimethylamino)-1,4,4a,5,5a,6,11,12a-octahydro-3,6,10,12,12a-pentahydroxy-6-methyl-1,11-dioxo-, (4S-(2(4R*,4aR*,5aR*,6R*,12aR*),4alpha,4aalpha,5aalpha,6beta,12aalpha)))