100324-63-8 25-Desacetylrifabutin 25-O-Deacetyl-1',4-didehydro-1-deoxy-1,4-dihydro-5'-(2-methylpropyl)-1-oxorifamycin XIV LM 565 LM-565 Rifamycin XIV, 25-O-deacetyl-1',4-didehydro-1-deoxy-1,4-dihydro-5'-(2-methylpropyl)-1-oxo-