User: I want to know more about the compound with SMILES N[C@@H](CCSC[C@H](N)C(=O)O)C(=O)O.
Assistant: Sure, what is your question?
User: Please describe this drug.
Assistant: Cystathionine is a metabolite found in or produced by Escherichia coli (strain K12, MG1655).
User: I want to know more about the {#molecule|chemical|compound!} with {SMILES__description} {SMILES#}.
Assistant: {#Sure, what is your question?|How can I help?|That sounds interesting, how can I help?|Interesting, how can I help?!}
User: {quest#}
Assistant: {#The answer is |!}{answ#}
N[C@@H](CCSC[C@H](N)C(=O)O)C(=O)O
C(CSC[C@@H](C(=O)O)N)[C@@H](C(=O)O)N
(2S)-2-amino-4-[(2R)-2-amino-2-carboxyethyl]sulfanylbutanoicacid
Please describe this drug.