You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a ccr1 antagonist.
user
O=C(CC(=O)NC1CC2CCC(C1)N2Cc1ccc(Cl)cc1)Nc1cccc(Cl)c1
assistant