Cc1c(C(=O)N(C)C)sc2c1c(=O)n(-c1ccccc1C(F)(F)F)c(=O)n2Cc1cccc(F)c1
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?