You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a btk inhibitor.
user
COCC=CC(=O)NC(C)c1nc(-c2ccc(C(=O)Nc3ccc(C)cn3)c(OC)c2)c2c(N)nccn12
assistant