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 a betasecretase inhibitor and belongs to the alzheimer's disease treatment class of molecules.
user
COCC12CC1C(C)(c1cc(C=C(F)c3cnc(OC(C)C(F)(F)F)cn3)ccc1F)N=C(N)S2
assistant