You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
The molecule is a btk inhibitor. Use the above information to create a molecule.
user
COc1ccc(CNc2ncc(C)c(NC3CN(C(=O)OC(C)(C)C)C3)c2C(=N)c2ccc(C(=O)NC3=NCCC=C3)cc2Cl)c(OC)c1
assistant