You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Suppose there is a molecule that meets the following description: The molecule is a btk inhibitor. Please write the SMILES representation of it.
user
Nc1ccc2nccc(Oc3ccc(C(=O)Nc4nccc(C(F)(F)F)n4)cc3)c2c1
assistant