CC(=O)O[C@H]1[C@@H](OC2CCCC2(c2ccccc2)c2ccccc2)O[N+]([O-])=C[C@@H]1c1ccccc1
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?