C=CCC[C@@H](Cc1ccc(F)cc1)C(=O)OC[C@@H](NC(=O)[C@@H](CC=C)CC(=O)N[C@@H](CO)Cc1ccccc1)C(C)(C)C
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.