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 a ccr2 antagonist. Use the above information to create a molecule.
user
Cc1cccc(C=CC(=O)N2CCC(C(O)CN3CCC(c4c[nH]c5ccccc45)CC3)CC2)c1
assistant