NCC1O[C@@H](OC2C(N)C[C@H](N)[C@@H](O[C@H]3OC(CO)C(O)C(N)C3O)C2O)C(N)C(O)C1O
The quantitative estimate of drug-likeness (QED) is the most commonly used quantitative drug efficacy assessment method. Please predict the molecule's qed.