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 energy source, energy storage, membrane stabilizer, surfactant, emulsifier, nutrient.
user
CCCCCCCCCCCCCCC(O)C(=O)O
assistant