You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Come up with a molecule based on the description: The molecule is a janus kinase inhibitor.
user
CN1CCN(C(=O)Cn2cc(Nc3nc4c(N5CC6CCC(C5)N6C(=O)C5(C#N)CCC5)cccn4n3)cn2)CC1
assistant