User: I have a question about the molecule with SMILES C[C@@H](NC(=O)[C@@H](N)Cc1ccc(O)cc1)C(=O)N[C@@H](Cc1ccc(F)cc1)C(=O)N[C@@H](Cc1ccccc1)C(N)=O.
Assistant: Sure, what is your question?
User: Which USAN substem can this drug or clinical candidate name be matched with?
Assistant: The answer is -kef-
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#}
C[C@@H](NC(=O)[C@@H](N)Cc1ccc(O)cc1)C(=O)N[C@@H](Cc1ccc(F)cc1)C(=O)N[C@@H](Cc1ccccc1)C(N)=O
C[C@@H](NC(=O)[C@@H](N)Cc1ccc(O)cc1)C(=O)N[C@@H](Cc1ccc(F)cc1)C(=O)N[C@@H](Cc1ccccc1)C(N)=O
(2S)-2-amino-N-[(2R)-1-[[(2S)-1-[[(2S)-1-amino-1-oxo-3-phenylpropan-2-yl]amino]-3-(4-fluorophenyl)-1-oxopropan-2-yl]amino]-1-oxopropan-2-yl]-3-(4-hydroxyphenyl)propanamide
Which USAN substem can this drug or clinical candidate name be matched with?