O=CC(O)C(O)C1OC(=O)c2cc(O)c(O)c(O)c2C2=C(O)C(O)=C3OC(=O)c4c(c(O)c(O)c5c4C3C2C(=O)O5)-c2c(cc(O)c(O)c2O)C(=O)OCC1O
The quantitative estimate of drug-likeness (QED) is the most commonly used quantitative drug efficacy assessment method. Please predict the molecule's qed.