CC1=C(C(=O)Nc2cc(F)c(F)cc2F)C(c2ccc(N(C)C)cc2)C(C(=O)Nc2cc(F)c(F)cc2F)=C(C)N1
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?