The molecule is an ammonium ion resulting from the protonation of all three amino groups of paromamine. The major species at pH 7.3. It is a conjugate acid of a paromamine.
[(1S,2R,3R,4S,5R)-5-azaniumyl-2-[(2S,3R,4R,5S,6R)-3-azaniumyl-4,5-dihydroxy-6-(hydroxymethyl)oxan-2-yl]oxy-3,4-dihydroxycyclohexyl]azanium