10-((6-Deoxy-2-O-methyl-alpha-L-mannopyranosyl)oxy)-7,8,9,10-tetrahydro-1,3,8,11-tetrahydroxy-9-methoxy-8-methyl-5,12-naphthacenedione 132354-18-8 2-Demethylsteffimycin D 5,12-Naphthacenedione, 10-((6-deoxy-2-O-methyl-alpha-L-mannopyranosyl)oxy)-7,8,9,10-tetrahydro-1,3,8,11-tetrahydroxy-9-methoxy-8-methyl-