You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: It belongs to the chemokine receptor antagonist class of molecules.
user
CCC(CC)N1CCC2(CCN(C(=O)c3ccc(CN(Cc4ncc[nH]4)Cc4nccn4C)cc3)C2)CC1
assistant