COc1ccc(C(=O)N2CCc3cc(OC)c(OC)cc3C2COc2ccc3c(C)cc(=O)oc3c2)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?