CCN1C(=O)[C@H]2[C@@H](C1=O)[C@@H](c1ccc(C(F)(F)F)cc1)N[C@]21CCCN(Cc2cccn2C)C1=O.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.