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 jak3 inhibitor.
user
CC1CN(C(=O)CC#N)CCCCN(c2ncnc3[nH]ccc23)C1
assistant