COC1CC(C)C(OC)c2cc(O)cc(c2O)NC(=O)C(C)=CC=CC(C)C(OC(N)=O)C(C)=CC(C)C1OC
Molecules with a polar surface area of greater than 60 angstroms squared (Å2) is hard to pass brain blood barrier. What's the psa of this molecule?