The molecule is an organic cation obtained by protonation of the primary amino groups of kanamycin C. It is an organic cation and an ammonium ion derivative. It is a conjugate acid of a kanamycin C.
[(1S,2R,3S,4S,5R)-5-azaniumyl-2-[(2S,3R,4R,5S,6R)-3-azaniumyl-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-4-[(2S,3R,4S,5S,6R)-4-azaniumyl-3,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-hydroxycyclohexyl]azanium