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 p2x7 antagonist that impacts pain treatment. Please represent the molecule in SMILES.
user
NC(=O)CN1CCCN(c2ncccc2CNc2nnnn2-c2cccc(Cl)c2Cl)CC1
assistant