You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: It belongs to the p2x3 antagonist class of molecules. Please write the SMILES representation of it.
user
Cc1cc(Nc2nc(=O)n(Cc3ccc(C(=O)O)o3)c(=O)n2Cc2ccc(Cl)cc2)ccc1OC(C)C
assistant