COc1ccc(NC(=O)CCCS(=O)(=O)c2nc(-c3ccccc3OC)cc(C(F)(F)F)n2)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?