User: I have a question about the compound with SMILES Cc1nc(=O)c2cc(CN(C)c3ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)O)s3)ccc2[nH]1.
Assistant: How can I help?
User: What is the definition of this compound's USAN stem?
Assistant: antineoplastic thymidylate synthetase inhibitors
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#}
Cc1nc(=O)c2cc(CN(C)c3ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)O)s3)ccc2[nH]1
Cc1nc(=O)c2cc(CN(C)c3ccc(C(=O)N[C@@H](CCC(=O)O)C(=O)O)s3)ccc2[nH]1
(2S)-2-[[5-[methyl-[(2-methyl-4-oxidanylidene-1H-quinazolin-6-yl)methyl]amino]thiophen-2-yl]carbonylamino]pentanedioicacid
What is the definition of this compound's USAN stem?
antineoplastic thymidylate synthetase inhibitors