CC(=O)Nc1cc(C(=O)Nc2cc(C(=O)Nc3cc(C(=O)Nc4cc(C(=O)Nc5cc(C(=O)NCCC(=O)NCCCN(C)C)n(C)c5)n(C)c4)n(C)c3)n(C)c2)n(C)c1.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.