Q: What is the definition of this compound's USAN stem?
 The Molecule has the SMILES O=C1N=C([O-])NC1(c1ccccc1)c1ccccc1.[Na+].
Answer: antiepileptics (hydantoin derivatives)
{#Question|Q!}: {quest#}
{#Constraint:|Description:|!} The {#Molecule|Compound|Chemical!} {#has the|can be represented with the!} {SMILES__description} {SMILES#}.
{#Answer|Result|Answer!}: {answ#}
O=C1N=C([O-])NC1(c1ccccc1)c1ccccc1.[Na+]
O=C1N=C([O-])NC1(c1ccccc1)c1ccccc1.[Na+]
sodium;4-oxidanylidene-5,5-diphenyl-1H-imidazol-2-olate
What is the definition of this compound's USAN stem?
antiepileptics (hydantoin derivatives)