The molecule is an organic cation obtained by protonation of the five free amino groups of 6'''-hydroxyneomycin C; major species at pH7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a 6'''-hydroxyneomycin C.
[(1S,2R,3R,4S,5R)-5-azaniumyl-2-[(2R,3R,4R,5S,6R)-3-azaniumyl-6-(azaniumylmethyl)-4,5-dihydroxyoxan-2-yl]oxy-3-[(2S,3R,4S,5R)-4-[(2R,3R,4R,5S,6R)-3-azaniumyl-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-4-hydroxycyclohexyl]azanium