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): The molecule is a p2x3 antagonist and belongs to the pain treatment class of molecules.
user
Nc1nc(N)c(Oc2ccccc2)c(S(N)(=O)=O)n1
assistant