C[C@@]12CC(=O)NC1N(C(=O)c1cccc(C(F)(F)F)c1)C(c1ccccc1OC(=O)c1cccc(C(F)(F)F)c1)C2
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.