68779-22-6 Antibiotic UK 18892 D-Streptamine, O-3-amino-3-deoxy-alpha-D-glucopyranosyl-(1-6)-O-(6-amino-6-deoxglucopyranosyl-(1-4)-N(sup 1)-(4-amino-2-hydroxybutyl)-2-deoxy-, (S)-, sulfate UK 18892