COc1ccc(CN(C)C(=O)c2ccc(NC(=O)CC3SC(N4CCCC4)=NC3=O)cc2)c(OC)c1OC
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?