CC(CCc1ccccc1)NC(=O)COC(=O)c1cc(NS(=O)(=O)c2ccc(Cl)c([N+](=O)[O-])c2)ccc1O
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?