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 both a waste product and a nutrient.
user
O=C(O)CC(=O)OCC1OC(Oc2c(-c3ccc(O)cc3)oc3cc(O)cc(O)c3c2=O)C(O)C(OC2OCC(O)(CO)C2O)C1O
assistant