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 ccr2 antagonist and is chemokine receptor modulator. Please write the SMILES representation of it.
user
Nc1ccc(Oc2ncc(CI)cc2[N+](=O)[O-])cc1
assistant