CCN1C(=O)[C@H]2[C@@H](C1=O)[C@@H](c1ccc(-c3ccc4c(c3)OCO4)c(OC)c1)N[C@@]2(Cc1ccccc1)C(=O)OC.O=C(O)C(F)(F)F
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?