66082-28-8 Propanamide, N-((1,5,6,7,9,10,13,14,14a,15-decahydro-2,11-dimethoxy-3,12,16-trimethyl-1,4,10,13-tetraoxo-6,15-imino-4H-isoquino(3,2-b)(3)benzazocin-9-yl)methyl)-2-oxo-, (6S-(6-alpha,9-beta,14a-alpha,15-alpha))- Saframycin B