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 p2x3 antagonist class of molecules.
user
Cc1cccc(-n2cc(-c3cccc(F)c3)c3c(NC4CCOCC4)ncnc32)c1
assistant