CN(CCS(=O)(=O)N1C(=O)C2CCCN2C(=O)[C@@H]1Cc1ccccc1)C(=O)OCc1ccccc1
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?