CN(C)C(=O)CCc1ccc2c3c([nH]c2c1)[C@]1(C)[C@@H](C(=O)N2CCCCC2)C[C@H](CC(=O)NC(C)(C)C)C(=O)N1CC3
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?