SMILES: C(C(C(=O)[O-])N)S
Description: The molecule is a sulfur-containing amino-acid anion that is the conjugate base of cysteine, obtained by deprotonation of the carboxy group. It is an alpha-amino-acid anion and a sulfur-containing amino-acid anion. It is a conjugate base of a cysteine and a cysteine zwitterion. It is a conjugate acid of a cysteinate(2-).