O=C1NC[C@H](Cc2ccccc2)N(C[C@H]2CCCN2C[C@H](Cc2ccccc2)N2C[C@H](Cc3ccccc3)N(CC3CCCCC3)C(=O)C2=O)C1=O
The quantitative estimate of drug-likeness (QED) is the most commonly used quantitative drug efficacy assessment method. Please predict the molecule's qed.