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
CC1(C)CC2CCC(c3nc(-c4ccc(C(C)(O)c5cccc(C(F)F)c5)cc4)c4c(N)ncc(F)n34)CN2C1=O
assistant