CCN1C(=O)[C@H]2[C@@H](C1=O)[C@@H](c1ccc(-c3ccc(Cl)c(Cl)c3)cc1)N[C@@]2(Cc1ccccc1)C(=O)OC.O=C(O)C(F)(F)F
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.