You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a dppiv inhibitor. Please write the SMILES representation of it.
user
CC(CC1(c2nnnn2C)c2ccc(C(N)=O)cc2CCc2cc(C(N)=O)ccc21)NCC(=O)N1CCCC1C#N
assistant