1-N-(2-Aminoethoxycarbonyl)kanamycin A 73352-74-6 Aec kanamycin A D-Streptamine, O-3-amino-3-deoxy-alpha-D-glucopyranosyl-(1-6)-O-(6-amino-6-deoxy-alpha-D-glucopyranosyl-(1-4))-N1-((2-aminoethoxy)carbonyl)-2-deoxy-