The molecule is an aminoglycoside derived from neomycin and consisting of neamine substituted at position 3 by a 2-amino-2-deoxy-alpha-D-glucopyranosyl-(1->3)-beta-D-ribofuranosyl group. It is a conjugate base of a 6'''-hydroxyneomycin C(5+).
(2R,3S,4R,5R,6R)-5-amino-2-(aminomethyl)-6-[(1R,2R,3S,4R,6S)-4,6-diamino-2-[(2S,3R,4S,5R)-4-[(2R,3R,4R,5S,6R)-3-amino-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3-hydroxy-5-(hydroxymethyl)oxolan-2-yl]oxy-3-hydroxycyclohexyl]oxyoxane-3,4-diol