COC(=O)C1=C(c2ccc(OCc3ccccc3)cc2)C[C@@H]2CC[C@H]1N2C(=O)NCc1ccc(N(C)C)cc1
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?