SMILES: COC1=C(C=C(C=C1)C[C@@H]2C3=CC(=C(C=C3CC[NH2+]2)OC)OC)OC
Description: The molecule is an organic cation that is the conjugate acid of (R)-tetrahydropapaverine, obtained by protonation of the secondary amino group; major species at pH 7.3. It is an ammonium ion derivative and an organic cation. It is a conjugate acid of a (R)-tetrahydropapaverine.