You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Conceptualize a molecule that meets the specified attribute(s): The molecule is a btk inhibitor.
user
Cn1cc(-c2ccnc(-n3ccn4c5c(cc4c3=O)CC(C)(C)C5)c2CO)cc(Nc2ccc(N3CCN(C4COC4)CC3=O)cn2)c1=O
assistant