You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a btk inhibitor. Please represent the molecule in SMILES.
user
C=CC(=O)N1CCC(n2c(=O)n(-c3ccc(NC(=O)c4ccc(C)c(C(F)(F)F)c4)cc3)c3cnccc32)C1
assistant