You are a chemist. Now you are given a description of a molecule. Please generate a molecule that meets the description.
system
Generate a molecule that fulfills the requirement: The molecule is both a nutrient and a environmental contaminant.
user
O=C(O)C1OC(OC2N=C(c3ccccc3Cl)c3cc(Cl)ccc3N=C2O)C(O)C(O)C1O
assistant