Kanamycin A 

Chemical Name: (2R,3S,4S,5R,6R)-2-(Aminomethyl)-6-(((1R,2R,3S,4R,6S)-4,6-diamino-3-(((2S,3R,4S,5S,6R)-4-amino-3,5-dihydroxy-6-(hydroxymethyl)tetrahydro-2H-pyran-2-yl)oxy)-2-hydroxycyclohexyl)oxy)tetrahydro-2H-pyran-3,4,5-triol

Synonym: Amikacin Sulfate Impurity D

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