CCC(=O)O[C@@]1(C(=O)CCl)[C@@H](C)C[C@@H]2[C@H]3CCC4=CC(=O)C=C[C@@]4(C)[C@]3(F)[C@@H](O)C[C@@]21C
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?