CCOC(=O)[C@@H]1[C@H]2COc3ccc(Br)cc3[C@H]2N2C(=O)N(c3ccc(Cl)cc3)C(=O)[C@@]12C
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?