The molecule is a secondary ammonium ion derived from spectinomycin by protonation of the secondary amino group located between the two alcoholic hydroxy groups. It is a conjugate base of a spectinomycin(2+). It is a conjugate acid of a spectinomycin.
methyl-[(1R,3S,5R,8R,10R,11S,12R,13R,14S)-8,12,14-trihydroxy-5-methyl-11-(methylamino)-7-oxo-2,4,9-trioxatricyclo[8.4.0.03,8]tetradecan-13-yl]azanium