You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule based on this description: The molecule is a chemokine receptor antagonist.
user
COCC1(C(=O)N2CCc3ncc(C(F)(F)F)cc3C2)CCN(Cc2ccc3c(c2)N(C)C(=O)C3)C1
assistant