1-N-(L(-)-γ-amino-α-hydroxybutyryl)kanamycin A
O-3-AMINO-3-DEOXY-.ALPHA.-D-GLUCOPYRANOSYL-(1->4)-O-(6-AMINO-6-DEOXY-.ALPHA.-D-GLUCOPYRANOSYL-(1->6))-N(SUP 3)-(4-AMINO-L-2-HYDROXYBUTYRYL)-2-DEOXY-L-STREPTAMINE