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: It belongs to the s1p1 agonist class of molecules.
user
COC(=O)CNC1CCCc2c(-c3nnc(-c4ccc(OC(C)C)c(C#N)c4)s3)cccc21
assistant