You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Build a molecule that meets the requirement: The molecule is a emulsifier, nutrient, energy storage, surfactant, energy source, membrane stabilizer.
user
CC1C(=O)OC2C1CCC1(C)C(OC3OC(CO)C(O)C(O)C3O)CC(=O)C(C)C21
assistant