You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a pain treatment and belongs to the cb2 agonist class of molecules. Please represent the molecule in SMILES.
user
COC(=O)NCCn1c(-c2ccccc2Cl)nc2c(N3CCN(C(C)=O)CC3)nc(C)nc21
assistant