COc1ccc(CN(C(=O)c2snc(C(N)=O)c2N)C(C(=O)NC2CCCC2)c2cc(OC)ccc2OC)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?