You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a btk inhibitor.
user
Nc1nccn2c(C3CCCN(CC4CCOC4)C3)nc(C3C=CC(C(=O)Nc4cc(C5CC5)ccn4)=CC3)c12
assistant