You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Based on the given information, generate a molecule that meets the desired specifications: The molecule is a s1p1 agonist and is autoimmune treatment.
user
O=C(O)OC1CCCN(CC(O)c2ccc(-c3noc(COCC4(c5ccc(Cl)cc5)CCC4)n3)cc2)C1
assistant