COc1ccc2[nH]cc(CCNC(=O)[C@H](Cc3ccccc3)NC(=O)[C@@H](NCC(F)(F)F)C(C)C)c2c1
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?