You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a dppiv inhibitor. Use the above information to create a molecule.
user
CC1CN(CC(N)CC(=O)N2CCc3c(nc(-c4ccc(F)cc4)nc3C(F)(F)F)C2)C(=O)CO1
assistant