Q: What is the first recorded year of approval for this drug?
 The Molecule can be represented with the SMILES CC(=O)OCC[N+](C)(C)C.[Cl-].
Result: 1973
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
CC(=O)OCC[N+](C)(C)C.[Cl-]
CC(=O)OCC[N+](C)(C)C.[Cl-]
2-acetyloxyethyl(trimethyl)azanium;chloride
What is the first recorded year of approval for this drug?
1973