The molecule is a tertiary ammonium ion that is the conjugate acid of secodine, obtained by protonation of the nitrogen atom of the tetrahydropyridine moiety. The major microspecies at pH 7.3. It is a conjugate acid of a secodine.
methyl 2-[3-[2-(5-ethyl-1,2,3,4-tetrahydropyridin-1-ium-1-yl)ethyl]-1H-indol-2-yl]prop-2-enoate