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.
user
Nc1ncnc2c1c(-c1ccc(Oc3ccccc3)cc1)nn2C1CCN(C2CCNCC2)CC1F
assistant