COC(=O)Cc1c([C@H]2[C@H](CC(=O)OC)c3ccccc3N2S(=O)(=O)c2ccc(C)cc2)[nH]c2ccccc12
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?