The molecule is conjugate acid of tabersonine arising from protonation of the tertiary amino group; major species at pH 7.3. It is a conjugate acid of a tabersonine.
methyl (1R,12R,19S)-12-ethyl-8-aza-16-azoniapentacyclo[10.6.1.01,9.02,7.016,19]nonadeca-2,4,6,9,13-pentaene-10-carboxylate