The molecule is an ammonium ion derivative resulting from the protonation of the tertiary amino group of (-)-voacangine. The major species at pH 7.3. It is a conjugate acid of a (-)-voacangine.
methyl (1S,15S,17S,18S)-17-ethyl-7-methoxy-3-aza-13-azoniapentacyclo[13.3.1.02,10.04,9.013,18]nonadeca-2(10),4(9),5,7-tetraene-1-carboxylate