User: I have a question about the chemical with SMILES O=C1CN(/N=C/c2ccc([N+](=O)[O-])o2)C(=O)[N-]1.[Na+].
Assistant: How can I help?
User: Which USAN substem can this drug or clinical candidate name be matched with?
Assistant: The answer is -toin
User: I have a question 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=C1CN(/N=C/c2ccc([N+](=O)[O-])o2)C(=O)[N-]1.[Na+]
O=C1CN(/N=C/c2ccc([N+](=O)[O-])o2)C(=O)[N-]1.[Na+]
sodium;1-[(E)-(5-nitrofuran-2-yl)methylideneamino]imidazolidin-3-ide-2,4-dione
Which USAN substem can this drug or clinical candidate name be matched with?
-toin