13929-37-8 Azepine, hexahydro-1-[[(1,2-dihydro-5,6,17,19,21-pentahydroxy-23-methoxy-2,4,12,16,18,20,22-heptamethyl-1,11-dioxo-2,7-(epoxypentadeca[1,11,13]trienimino)naphtho[2,1-b]furan-9-yl)oxy]acetyl]-, 21-acetate NSC143440 Rifamycin B azepinide Rifamycin, 4-O-[2-(hexahydro-1H-azepin-1-yl)-2-oxoethyl]-