Question: What is the first recorded year of approval for this drug?
 The Chemical can be represented with the SMILES CN(C)c1nc(N(C)C)nc(N(C)C)n1.
Answer: 1990
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
CN(C)c1nc(N(C)C)nc(N(C)C)n1
CN(C)c1nc(N(C)C)nc(N(C)C)n1
2-N,2-N,4-N,4-N,6-N,6-N-hexamethyl-1,3,5-triazine-2,4,6-triamine
What is the first recorded year of approval for this drug?