Cc1cccc(N2C(=O)C3ON(C(C(N)=O)c4ccccc4)C(c4c5ccccc5c(Cl)c5ccccc45)C3C2=O)c1C
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?