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: The molecule is a sting agonist.
user
COC(=O)CCCC(=O)C1CC(c2cn(C(=O)OC(C)(C)C)c3cccc(F)c23)=CS1
assistant