CC(C)(C)OC(=O)NCc1ccc(NC(=O)c2[nH]cnc2C(=O)NCCCNC(=O)c2nc[nH]c2C(=O)Nc2ccc(CNC(=O)OC(C)(C)C)cc2)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.