You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is anti tumor.
user
Cn1cc(C2NC=CC(Oc3ccc(NC(=O)Nc4ccc(Cl)c(C(F)(F)F)c4)cc3)=C2F)cn1
assistant