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.
user
COCCOc1cc(C(=O)Nc2cc(C(F)(F)F)ccn2)ccc1-c1nc(C2CCC3CCC(=O)N3C2)n2ccnc(NCc3ccc(OC)cc3OC)c12
assistant