55528-52-4 Antibiotic Z-1159-1 D-Streptamine, O-2-amino-2-deoxy-alpha-D-glucopyranosyl-(1-4)-O-(beta-D-xylofuranosyl-(1-5))-N(sup 1)-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy- D-Streptamine, O-2-amino-2-deoxy-alpha-D-glucopyranosyl-(1-4)-O-(beta-D-xylofuranosyl-(1-5))-N1-(4-amino-2-hydroxy-1-oxobutyl)-2-deoxy- Z-1159-1