2-Butenedioic acid, 3-[[1-[(3-acetyl-1,2,3,4-tetrahydro- 3,5,12-trihydroxy-10-methoxy-6,11-dioxo-1- naphthacenyl)oxy]-2,3,6-trideoxy-.alpha.-L-lyxo- hexopyranos-3-yl]amino]-, dimethyl ester Daunorubicin, enamine derivative NSC608747