You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is autoimmune treatment.
user
COC(=O)C12CCC3C(C(=O)C=C4C5(C)C=C(C#N)C(=O)C(C)(O)C5CCC43C)C1CC(C)(C)CC2
assistant