You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a p2x3 antagonist.
user
CC(C)Oc1ccc(Nc2nc(=O)n(C(C)C)c(=O)n2Cc2ccc(C(F)(F)F)cc2)cc1
assistant