Rifabutin N-oxide Open Ring

NA

(7'Z,9'E,11'S,12'S,13'R,14'R,15'R,16'S,17'R,18'S,19'E,22'R)-16'-Acetoxy-12',14',22',24',26'-pentahydroxy-1-isobutyl-18'-methoxy-7',11',13',15',17',22',25'-heptamethyl-6',23',28'-trioxo-5',6',11',12',13',14',15',16',17',18',22',23'-dodecahydro-4'H-spiro[piperidine-4,2'-[4,27]methanobenzo[d]imidazo[4,5-f][1]oxa[9]azacyclotetracosine] 1-oxide; (11R,13E,16S,17R,18S,19R,20R,21S,22S,23E,25Z)-17-Acetyloxy-6,8,11,19,21-pentahydroxy-15-methoxy-7,11,16,18,20,22,26-heptamethyl-1′-(2-methylpropyl)-5,10,27-trioxo-3,5-dihydrospiro[4,9-(epiminopentadeca[2,4,14]trienoxyethano)naphtho[1,2-d]imidazole-2,4′-piperidine] N1′-oxide (USP);