3-O-Demethyl-2,3-di-epi-fortimicin B 3-O-Demethylfortimicin B 68102-53-4 L-chiro-Inositol, 4-amino-1,4-dideoxy-3-O-(2,6-diamino-2,3,4,6,7-pentadeoxy-beta-L-lyxo-heptopyranosy)-1-(methylamino)-