User: I'm searching for the SMILES of a molecule that can be described by:
The molecule is a cystine zwitterion. It is an enantiomer of a D-cystine zwitterion. It is a tautomer of a L-cystine.
Assistant: This is a molecule that fits this description: [NH3+][C@@H](CSSC[C@H]([NH3+])C(=O)[O-])C(=O)[O-]
User: I'm {#searching|looking!} for the {SMILES__description} of a molecule that can be described {#by|as!}:
{description#}
Assistant: This is a molecule that fits {#your|this!} description: {SMILES#}
[NH3+][C@@H](CSSC[C@H]([NH3+])C(=O)[O-])C(=O)[O-]
C([C@@H](C(=O)[O-])[NH3+])SSC[C@@H](C(=O)[O-])[NH3+]
(2R)-2-azaniumyl-3-[[(2R)-2-azaniumyl-2-carboxylatoethyl]disulfanyl]propanoate
The molecule is a cystine zwitterion. It is an enantiomer of a D-cystine zwitterion. It is a tautomer of a L-cystine.