CC(C)[C@@H]1CC[C@@H](C)C[C@H]1OC(=O)C[n+]1cc(-c2ccc(Cl)cc2)n2c1CCCCC2.[Cl-]
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?