CN1C[C@H](C(=O)NC2(C)OC3(O)[C@@H]4CCCN4C(=O)[C@H](Cc4ccccc4)N3C2=O)CC2c3cccc4[nH]cc(c34)C[C@H]21.CS(=O)(=O)O
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?