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
COc1ccc(CNc2nccn3c(C4CCC5CN(C(=O)O)CC(=O)N5C4)nc(Br)c23)c(OC)c1
assistant