O=C(C(O)c1ccc(Br)cc1)N1CCC(Nc2ccc3[nH]ncc3c2)CC1.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?