O=C1C2C=CC(n3[nH]c(=O)n(Cc4ccccc4)c3=O)CC2C(=O)N1c1ccc(Br)cc1
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?