CC(C)(C)NC(=O)C(c1ccc(-c2ccccc2)cc1)N(C[C@H]1CC[C@@H]([C@@H]2CC[C@H](CO)O2)O1)C(=O)c1ccc(C(C)(C)C)cc1
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.