O=C(c1ccc(S(=O)(=O)N2CCCCC2)cc1)N1CCN(CCN2C(=O)c3cccc4cccc(c34)C2=O)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?