Cc1ccc(S(=O)(=O)N2CCN(CC(=O)NC3CCCc4ccccc43)CC2)cc1C.O=C(O)C(=O)O
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?