O=C1[C@@H]2CN3CN(c4ccccc4)N=C(c4ccccc4)[C@@]3(c3ccccc3)[C@@H]2C(=O)N1c1ccccc1
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?