You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
I need a molecule that meets the following conditions: The molecule is a nutrient, environmental contaminant, membrane stabilizer, energy source, energy storage. Please represent the molecule in SMILES.
user
CC1C(=O)OC2C1CCC1(C)C(O)CC(O)C(C)C21
assistant