2-Azabicyclo[16.3.1]docosane, geldanamycin deriv. 73341-73-8 Geldanamycin, 18,21-didehydro-6,17-didemethoxy-18,21-dideoxo-18,21-dihydroxy-15-methoxy-6-methyl-11-O-methyl- Geldanamycin, 18,21-didehydro-6,17-didemethoxy-18,21-dideoxo-18,21-dihydroxy-15-methoxy-6-methyl-11-O-methyl-, (6S,15R)- MACBECIN II NSC330500