COC(=O)[C@H](Cc1c[nH]c2ccccc12)NC(=O)c1ccc(CNC(=O)/C=C/c2cccc(Oc3ccccc3)c2)cc1
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?