Yazumycin A

Racemomycin A

streptothricin F

Streptothricin VI

Antibiotic S-15-1A

(3aS)-2-[[4-O-(Aminocarbonyl)-2-[[(S)-3,6-diamino-1-oxohexyl]amino]-2-deoxy-β-D-gulopyranosyl]amino]-1,3aβ,5,6,7,7aα-hexahydro-7β-hydroxy-4H-imidazo[4,5-c]pyridin-4-one