You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): It belongs to the ccr5 antagonist, ccr3 antagonist, and ccr2 antagonist classes of molecules.
user
CC1C(=O)N2C(=CCC2CCN2CCC3(CC3)C(O)C2)CN1C(=O)O
assistant