C[C@@H](CO)N1C[C@@H](C)[C@H](CN(C)S(=O)(=O)c2ccc(C(F)(F)F)cc2)OCc2ccccc2-c2c(n(C)c3ccccc23)C1=O
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?