COc1ccc(CNC(=O)[C@@H]2CCCN2C(=O)[C@@H](C)N(C)C(=O)[C@H](C(C)C)N(C)C(=O)[C@@H](NC(=O)[C@H](C(C)C)N(Cc2ccccc2)Cc2ccccc2)C(C)C)c(OC)c1
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?