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
Cc1ccc(CN2C(=O)N(CCC(=O)N=O)C(=O)N(N)C2NC2=CC(C3CC3)C(OC(C)C)C=C2)cc1
assistant