You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a betasecretase inhibitor and belongs to the alzheimer's treatment class of molecules. Please represent the molecule in SMILES.
user
CCC(=O)C1=CC(C2(c3cccc(-c4cccnc4F)c3)N=C(N)N(C)C2=O)CS1
assistant