The molecule is an ammonium ion that is the conjugate acid of (S)-reticuline, arising from protonation of the tertiary amino group; major species at pH 7.3. It is a conjugate acid of a (S)-reticuline.
(1S)-1-[(3-hydroxy-4-methoxyphenyl)methyl]-6-methoxy-2-methyl-1,2,3,4-tetrahydroisoquinolin-2-ium-7-ol