CC1(C)C(O)CC(O)[C@]2(C)C1CC(O)[C@]1(C)C2CC[C@@]2(C)C(c3ccoc3)OC(=O)C3O[C@@]321
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?