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, emulsifier, nutrient, membrane stabilizer, surfactant.
user
CCCCCCCC(=O)CCCCCCCC(=O)O
assistant