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 ccr2 antagonist class of molecules.
user
CC1OC(CN(C(=O)OCc2ccccc2)c2ccnc3ccc(C(F)(F)F)cc23)O1
assistant