User: I want to know more about the compound with SMILES O=C1N=C([O-])NC1(c1ccccc1)c1ccccc1.[Na+].
Assistant: That sounds interesting, how can I help?
User: What is the definition of this compound's USAN stem?
Assistant: antiepileptics (hydantoin derivatives)
User: I want to know more about the {#molecule|chemical|compound!} with {SMILES__description} {SMILES#}.
Assistant: {#Sure, what is your question?|How can I help?|That sounds interesting, how can I help?|Interesting, how can I help?!}
User: {quest#}
Assistant: {#The answer is |!}{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)