CC(C)[C@H](NC(=O)[C@@H](NS(=O)(=O)Cc1ccccc1)C(C)C)C(=O)NNc1ccccc1.O=CO
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?