CC(=O)n1cc([C@@H]2C=C(C(=O)N3CCN(Cc4ccccc4)CC3)O[C@H](OCc3ccc(CO)cc3)C2)c2ccccc21
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?