Q: What is the first recorded year of approval for this drug?
 The Molecule can be represented with the SMILES O[C@@H]1CO[C@H]2[C@@H]1OC[C@@H]2O.
Answer: 1974
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O[C@@H]1CO[C@H]2[C@@H]1OC[C@@H]2O
O[C@@H]1CO[C@H]2[C@@H]1OC[C@@H]2O
(3S,3aR,6R,6aR)-2,3,3a,5,6,6a-hexahydrofuro[3,2-b]furan-3,6-diol
What is the first recorded year of approval for this drug?