You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a immunomodulator and a autoimmune treatment, belonging to the s1p1 agonist class of molecules. Please represent the molecule in SMILES.
user
CC(C)Cc1cc(Cl)c2nc(-c3nc(-c4cc(F)c(CCC(=O)OC(C)(C)C)cc4Cl)no3)cn2c1
assistant