The molecule is a tertiary ammonium ion resulting from the protonation of the tertiary amino group of noribogaine. It is a conjugate acid of a noribogaine.
(1R,15R,17S,18S)-17-ethyl-3-aza-13-azoniapentacyclo[13.3.1.02,10.04,9.013,18]nonadeca-2(10),4(9),5,7-tetraen-7-ol