6,16,18,20-Tetrahydroxy-1'-isobutyl-14-methoxy-7,9,15,17,19,21,25-heptamethylspiro-[9,4-(expoxypentadeca[1,11,13]trienimino)-2H-furo[2',3':7,8]naphth[1,2-d]imidazole-2,4'-piperidine-5,10,26(3H,9H)- AIDS-008487 AIDS008487 Rifabutin & Ethambutol