You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Can you create a molecule that matches the given characteristics? The molecule is both a pain treatment and a p2x3 antagonist.
user
O=C(O)c1cc(C(=O)O)c(C(=O)N(Cc2cccc(-c3cc(Cl)cc(Cl)c3)c2)C2CCCc3ccccc32)cc1C(=O)O
assistant