saframycin S

N-[(1,5,6,7,9,10,13,14,14a,15-Decahydro-7-hydroxy-2,11-dimethoxy-3,12,16-trimethyl-1,4,10,13-tetraoxo-6,15-epimino-4H-isoquino[3,2-b][3]benzazocin-9-yl)methyl]-2-oxopropionamide