COc1ccc(CCNC(=O)c2cc(C(=O)c3cc(C)ccc3O)cn(CCc3ccc(OC)cc3)c2=O)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?