User: I'm searching for the SMILES of a molecule that can be described as:
The molecule is a tetrapeptide composed of two L-cysteine units joined to two L-histidine units by a peptide linkage. It has a role as a metabolite. It derives from a L-cysteine and a L-histidine.
Assistant: This is a molecule that fits this description: N[C@@H](CS)C(=O)N[C@@H](CS)C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)N[C@@H](Cc1cnc[nH]1)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](CS)C(=O)N[C@@H](CS)C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)N[C@@H](Cc1cnc[nH]1)C(=O)O
(2S)-2-[[(2S)-2-[[(2R)-2-[[(2R)-2-amino-3-sulfanylpropanoyl]amino]-3-sulfanylpropanoyl]amino]-3-(1H-imidazol-5-yl)propanoyl]amino]-3-(1H-imidazol-5-yl)propanoic acid
The molecule is a tetrapeptide composed of two L-cysteine units joined to two L-histidine units by a peptide linkage. It has a role as a metabolite. It derives from a L-cysteine and a L-histidine.