You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a btk inhibitor and is cancer treatment.
user
C=C(C#N)C(=O)N1CCC(CNc2ncnc(N)c2-c2ccc(C(F)(F)F)cc2)CC1
assistant