56276-04-1 Antibiotic XK 88-1 D-Streptamine, O-2-amino-2-deoxy-alpha-D-glucopyranosyl-(1-4)-O-(6-amino-2-deoxy-alpha-D-xylopyranosyl-(1-6))-2-deoxy- Seldomycin factor 1 XK 88-1 XX-88-1