You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is a janus kinase inhibitor.
user
CN1CCN(C(=O)Cn2cc(Nc3nc4c(N5CC6CCC(C5)N6C(=O)C(C)(C)CC(F)(F)F)cccn4n3)cn2)CC1
assistant