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 chemokine receptor modulator. Use the above information to create a molecule.
user
O=C(O)C(CC1CCC1)N1CC(CN2CCC(CCC(F)(F)c3ccccc3)CC2)C(c2ccccc2)C1
assistant