O=c1[nH]c(=O)n(-c2ccc(F)cc2)c2c1C(C(F)(F)F)(C(F)(F)F)NC(c1ccc(F)cc1)=N2
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?