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 dppiv inhibitor.
user
CC1(N)CCN(S(=O)(=O)OCC2OC3OC(C)(C)OC3C3OC(C)(C)OC23)CC1
assistant