Question: What is the first recorded year of approval for this drug?
Constraint: The Molecule has the SMILES CCC[C@@H]1C[C@@H](C(=O)N[C@@H]([C@H]2O[C@H](SC)[C@H](OP(=O)(O)O)[C@@H](O)[C@H]2O)[C@H](C)Cl)N(C)C1.
Answer: 1972
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
CCC[C@@H]1C[C@@H](C(=O)N[C@@H]([C@H]2O[C@H](SC)[C@H](OP(=O)(O)O)[C@@H](O)[C@H]2O)[C@H](C)Cl)N(C)C1
CCC[C@@H]1C[C@@H](C(=O)N[C@@H]([C@H]2O[C@H](SC)[C@H](OP(=O)(O)O)[C@@H](O)[C@H]2O)[C@H](C)Cl)N(C)C1
[(2R,3R,4S,5R,6R)-6-[(1S,2S)-2-chloro-1-[[(2S,4R)-1-methyl-4-propylpyrrolidine-2-carbonyl]amino]propyl]-4,5-dihydroxy-2-methylsulfanyloxan-3-yl]dihydrogenphosphate
What is the first recorded year of approval for this drug?