User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is a homocystine in which both chiral centres have L configuration. It derives from a L-homocysteine. It is a tautomer of a L,L-homocystine zwitterion.
Assistant: This is a molecule that fits your description: N[C@@H](CCSSCC[C@H](N)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#}
N[C@@H](CCSSCC[C@H](N)C(=O)O)C(=O)O
(2S)-2-amino-4-[[(3S)-3-amino-3-carboxypropyl]disulfanyl]butanoicacid
The molecule is a homocystine in which both chiral centres have L configuration. It derives from a L-homocysteine. It is a tautomer of a L,L-homocystine zwitterion.