100242-41-9 CP 63517 Dianemycin, 19-de((tetrahydro-5-methoxy-6-methyl-2H-pyran-2-yl)oxy)-15-((tetrahydro-5-methoxy-6-methyl-2H-pyran-2-yl)oxy)-, (15(2S,5S,6R))- Endusamycin