You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a btk inhibitor.
user
C=CC(=O)Nc1ccc2c(c1)N(c1nc(Nc3ccc(OCCOC)cc3)ncc1F)CC21CC1
assistant