CC(C)C(=O)OCC(=O)[C@@]12OC(C3CCCCC3)O[C@@H]1CC1C3CCC4=CC(=O)C=C[C@]4(C)C3[C@@H](O)C[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?