Oc1ccc(C[C@H]2CN([C@@H](Cc3ccccc3)CN3CCC[C@@H]3CN3C(=S)NC[C@@H]3Cc3ccccc3)C(=S)N2CC2CCCCC2)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?