C#CCN(C[C@@H]1[C@@H](OC(=O)NCc2ccccc2)[C@@H](OC(=O)NCc2ccccc2)CN(C(=O)OC(C)C)N1C(=O)OC(C)C)S(=O)(=O)c1ccc(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?