CCN(CC)C(=O)CSc1nc2c(sc(=S)n2-c2ccccc2)c(=O)n1-c1ccc(OC)c(OC)c1
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?