O=C(C=P(c1ccccc1)(c1ccccc1)c1ccccc1)c1ccccc1-c1ccccc1C(=O)C=P(c1ccccc1)(c1ccccc1)c1ccccc1
The quantitative estimate of drug-likeness (QED) is the most commonly used quantitative drug efficacy assessment method. Please predict the molecule's qed.