O=C1NC[C@@H](c2ccccc2)OC(=O)[C@@H](Cc2ccc(F)cc2)CC/C=C/C[C@@H]1CC(=O)N(CCO)Cc1ccccc1
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.