O=C(Nc1ccc2c(c1)Cc1ccccc1-2)[C@@H]1[C@H](C(=O)O)[C@]2(Cl)C(Cl)=C(Cl)[C@@]1(Cl)C2(Cl)Cl
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?