Istamycin B-3

2''-formimidoylistamycin B

2''-N-Formimidoylistamycin B

2-Amino-1-O-[2-amino-2,3,4,6-tetradeoxy-6-(methylamino)-α-D-erythro-hexopyranosyl]-2,3,5-trideoxy-5-[[[(iminomethyl)amino]acetyl]methylamino]-4-O-methyl-D-allo-inositol