Cc1cc(C)c2c(c1)[C@]1(C(=O)N2)C(C(=O)c2ccccc2)C(c2cccc([N+](=O)[O-])c2)C2CSCN21
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?