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 both a nutrient and a waste product. Please represent the molecule in SMILES.
user
COc1c(-c2ccc(O)c(O)c2)oc2cc(OC3OC(CO)C(OC4OC(CO)C(O)C(O)C4O)C(O)C3O)cc(O)c2c1=O
assistant