The polar surface area (PSA) or topological polar surface area (TPSA) is a measurable value of a molecule's surface area that constitutes polar atoms, such as oxygen and nitrogen, along with their hydrogen atoms. It is extensively used in medicinal chemistry to evaluate and enhance a drug's ability to permeate cells. A higher polar surface area indicates that the molecule is less likely to penetrate cell membranes. Typically, molecules whose polar surface area exceeds 140 angstroms squared (Å2) have poor cell membrane permeability.What is the polar surface area value for this molecule?