COc1ccc(NC(=O)CSC(=O)c2ccccc2)c(SCCSSCCSc2cc(OC)ccc2NC(=O)CSC(=O)c2ccccc2)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?