You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? It belongs to the p2x3 antagonist class of molecules.
user
CCn1c(=O)nc(Nc2ccc(OC(C)=CC=CC(=N)C(N)=O)cc2)n(CC2CCC(C)CC2)c1=O
assistant