COc1cc(OC)c(C2C(C#N)=C(N)Oc3cc(C)n(CCCN4CCOCC4)c(=O)c32)cc1OC
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?