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 alzheimer's disease treatment and is gamma secretase modulator. Please represent the molecule in SMILES.
user
Cc1cc(-c2ccc(NC(=O)C(CC(C)C)c3ccc(I)cc3)cc2)ccn1
assistant