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 tyk2 inhibitor.
user
Cc1cc(Nc2nccc3nc(-c4c(Cl)cc(C5CN(C(=O)OC(C)(C)C)C5)cc4Cl)sc23)ncn1
assistant