SMILES: C[C@H]1[C@@H]2C[NH+]3CCC4=C([C@@H]3C[C@@H]2C(=CO1)C(=O)OC)NC5=CC=CC=C45
Description: The molecule is an ammonium ion resulting from the protonation of the tertiary amino group of tetrahydroalstonine. The major microspecies at pH 7.3. It is a conjugate acid of a tetrahydroalstonine.