COc1ccc(N2C(=O)N3[C@H](c4ccc(Cl)cc4)[C@@H]4C(=O)N(C5CCCCC5)C(=O)[C@@H]4[C@]3(Cc3ccc(Cl)cc3)C2=O)cc1
PSA is a commonly used medicinal chemistry metric for the optimization of a drug's ability to permeate cells. Please predict psa of this molecule.