CC[C@H](C)[C@H](NC(=O)OCc1ccccc1)C(=O)OCC(=O)N(C)CC(=O)Nc1ccccc1Cl
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?