Cl.O=C(CSc1nnc(-c2ccccc2)n1C1CCCCC1)Nc1ccc(S(=O)(=O)Nc2ccccn2)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?