Cc1ccc2nc3ccccc3c(C3C4C(=O)N(c5ccc(Br)cc5Cl)C(=O)C4ON3C(C(N)=O)c3ccccc3)c2c1
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?