CC(C)CO/N=C1/C[C@@H](O)[C@@H](O)[C@@H]2[C@@H]3C(=O)N(C[C@@H]4CCCO4)C(=O)[C@H]3CC[C@@H]12
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?