O=C1N[C@@H](Cc2ccccc2)C(=O)N2[C@H]1C[C@]1(Br)c3ccccc3N(S(=O)(=O)c3ccccc3)[C@H]21
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?