Q: What is the first recorded year of approval for this drug?
 The Compound has the SMILES C[C@H](CS)C(=O)N1CCC[C@H]1C(=O)O.
Answer: 1981
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {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