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#CCn1c(N2CCNCC2)nc2c1c(=O)n(CCOCC)c(=O)n2C.O=C(O)C(F)(F)F
assistant