10-Deoxysteffimycin B 5,12-Naphthacenedione, 10-((6-deoxy-2,4-di-O-methyl-alpha-L-mannopyranosyl)oxy)-7,8,9,10-tetrahydro-1,8,11-trihydroxy-3,9-dimethoxy-8-methyl- 98813-22-0 Steffimycin C