CS/C1=C(\c2ccc(C)cc2)N(c2ccccc2)C(=O)C(=O)N(c2ccccc2)/C(c2ccc(C)cc2)=C(/SC)SS1
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?