O=C(CC[N+](=O)[O-])OCC1OC(O)C(OC(=O)CC[N+](=O)[O-])[C@@H](OC(=O)CC[N+](=O)[O-])C1OC(=O)CC[N+](=O)[O-]
The quantitative estimate of drug-likeness (QED) is the most commonly used quantitative drug efficacy assessment method. Please predict the molecule's qed.