COc1ccc(C2C(C(=O)Nc3ccccc3OC)=C(C)Nc3c(C(=O)Nc4ccccc4)cnn32)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?