SMILES: C1=CC=C2C(=C1)C(=CN2)C(C#N)SC[C@@H](C(=O)[O-])[NH3+]
Description: The molecule is an L-alpha-amino acid zwitterion obtained by transfer of a proton from the carboxy to the amino group of L-Cys(IAN). It is the major microspecies at pH 7.3 (according to Marvin v 6.2.0.). It is a tautomer of a L-Cys(IAN).