SMILES: CC(=CCC1=C2C(=CC=C1)C(=CN2)C[C@@H](C(=O)[O-])[NH3+])C
Description: The molecule is an amino acid zwitterion obtained by transfer of a proton from the carboxy group to the primary amino group of 7-(3-methylbut-2-enyl)-L-tryptophan. Major species at pH 7.3. It is a tautomer of a 7-(3-methylbut-2-enyl)-L-tryptophan.