17-oxa-4-azabicyclo(14.1.0)heptadecane-5,9-dione, 7,11-dihydroxy-8,8,10,12,16-pentamethyl-3-((1E)-1-methyl-2-(2-methyl-4-thiazolyl)ethenyl)-, (1S,3S,7S,10R,11S,12S,16R)- 219989-84-1 Azaepothilone B BMS 247550-1 Ixabepilone Ixabepilone [INN]