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 s1p1 agonist. Please represent the molecule in SMILES.
user
CCn1nc(-c2nc(-c3cc(C)c(CC=O)c(C)c3)no2)cc1-c1cccc(Cl)c1
assistant