NC(=O)C(c1ccccc1)N1OC2C(=O)N(c3ccccc3)C(=O)C2C1c1c2ccccc2c(Cl)c2ccccc12
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?