CO[C@@H]1[C@@H](O)[C@@H](O)[C@H](Oc2ccc(-c3ccccc3Cl)c(C(=O)NCc3ccccc3)c2)OC1(C)C
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?