You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Give me a molecule that satisfies the conditions outlined in the description: The molecule is a p2x3 antagonist.
user
C=NC(C)=NC(=CC)Oc1ccc(Nc2nc(=O)n(CC(C)(C)C(=O)OC)c(=O)n2Cc2ccc(Cl)cc2)cc1
assistant