Cn1c(=O)oc2cc(S(=O)(=O)N3CCC(C(=O)N4CCN(c5ccc(Cl)cc5)CC4)CC3)ccc21
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?