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 emulsifier, a signalling molecule, and a energy source. The molecule is a surfactant, membrane stabilizer, energy storage, nutrient.
user
CC1(O)C(=O)OC2CC3C4CCC5CC(O)CCC5(C)C4CCC3(C)C21
assistant