CN(Cc1cc(Cl)cc(Cl)c1)[C@H]1C[C@H]2c3[nH]c4ccccc4c3CCN2C(=O)[C@H]1CO
Molecules with a polar surface area of greater than 140 angstroms squared (Å2) tend to be poor at permeating cell membranes. What's the psa of this molecule?