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 bace1 inhibitor and belongs to the neurodegenerative disease treatment class of molecules, impacting alzheimer's treatment.
user
NC1=NC2(c3cc(-c4cccnc4F)ccc3F)COCCC2CS1
assistant