11033-34-4 4-(4,5-Dihydroxy-3-methoxy-6-methyl-tetrahydro-pyran-2-yloxy)-2,5,7-trihydroxy-3,9-dimethoxy-2-methyl-3,4-dihydro-2H-naphthacene-1,6,11-trione AIDS-014790 AIDS014790 Antibiotic U 20661 NSC93419 Steffimycin