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
COC(=O)CCn1c(=O)nc(Nc2ccc(Oc3ccc(F)cn3)c(F)c2)n(Cc2ccc(C)cc2)c1=O
assistant