CCCCN1CC(=O)N2[C@H]3c4cc(Br)ccc4OC[C@@H]3[C@H](C(=O)OCC)[C@]2(C)C1=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?