Nc1ccc(Oc2ccc(C3(c4ccc(Oc5ccc(N)c(O)c5)cc4)C4CC5C6CC7CC5C3C(C7)C6C4)cc2)cc1O
The quantitative estimate of drug-likeness (QED) is the most commonly used quantitative drug efficacy assessment method. Please predict the molecule's qed.