CCC(C)[C@H](NC(=O)C1CCN(C(=O)[C@H](Cc2ccccc2)NS(=O)(=O)c2ccc(C)cc2)CC1)C(=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?