The molecule is an organic cation that is the conjugate acid of neomethymycin, obtained by protonation of the tertiary amino group; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a neomethymycin.
[(2S,3R,4S,6R)-3-hydroxy-2-[[(3R,4S,5S,7R,9E,11R,12S)-12-[(1R)-1-hydroxyethyl]-3,5,7,11-tetramethyl-2,8-dioxo-1-oxacyclododec-9-en-4-yl]oxy]-6-methyloxan-4-yl]-dimethylazanium