COc1ccc(OC)c(NS(=O)(=O)c2ccc3nc(C)n(NS(=O)(=O)c4cc(OC)ccc4OC)c(=O)c3c2)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?