Q: What is the first recorded year of approval for this drug?
 The Compound can be represented with the SMILES CCn1nc(C(=O)O)c(=O)c2cc3c(cc21)OCO3.
Answer: 1980
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
CCn1nc(C(=O)O)c(=O)c2cc3c(cc21)OCO3
CCn1nc(C(=O)O)c(=O)c2cc3c(cc21)OCO3
1-ethyl-4-oxo-[1,3]dioxolo[4,5-g]cinnoline-3-carboxylic acid
What is the first recorded year of approval for this drug?
1980