Question: What is the first recorded year of approval for this drug?
Constraint: The Compound has the SMILES CCC(C)C1(CC)C(=O)[N-]C(=O)NC1=O.[Na+].
Result: 1939
{#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)C1(CC)C(=O)[N-]C(=O)NC1=O.[Na+]
CCC(C)C1(CC)C(=O)[N-]C(=O)NC1=O.[Na+]
sodium;5-butan-2-yl-5-ethylpyrimidin-3-ide-2,4,6-trione
What is the first recorded year of approval for this drug?