You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Could you please return a molecule that adheres to this description? The molecule is a prodrug and gastrointestinal drug, belonging to the anti ulcer drug class of molecules, and is non-steroidal anti inflammatory drug.
user
CS(=O)(=O)OCCCCOS(C)(=O)=O
assistant