CCN1CCN(Cc2ccc(NC(=O)c3cc(NC(=O)c4cncc(-c5ccc(C#N)cc5)c4)cc(OC)c3)cc2C(F)(F)F)CC1.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.