User: I have a question about the molecule with SMILES C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O.
Assistant: Interesting, how can I help?
User: What is the first recorded year of approval for this drug?
Assistant: 1981
User: I have a question 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#}
C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O
C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O
(2S)-1-[(2S)-2-methyl-3-sulfanylpropanoyl]pyrrolidine-2-carboxylic acid
What is the first recorded year of approval for this drug?
1981