You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a ccr5 antagonist and ccr2 antagonist, belonging to the ccr3 antagonist class of molecules, and is chemokine receptor modulator. Please write the SMILES representation of it.
user
COC(=O)C(CCOCc1ccccc1)NCCN(CCC(=O)OC(C)(C)C)c1ccc(Cl)c(Cl)c1
assistant