You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a btk inhibitor.
user
C=CC(=O)Nc1cccc2c1CCC(n1nc(-c3cc(O)cc(F)c3)c3c(N)ncnc31)C2
assistant