You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I give you a description of a molecule, and you need to return one molecule in SMILES that meets the description. The description: The molecule is a btk inhibitor and belongs to the cancer treatment class of molecules.
user
CN(C)C(=O)C=Cc1ccc2ccc(Oc3ncnc(N)c3-c3ccc(Oc4ccccc4)cc3)cc2c1
assistant