C[C@]12CC[C@H]3[C@@H](CCC4=C/C(=N/O)CC[C@@]43C)[C@@H]1CC(=C\c1ccc([N+](=O)[O-])cc1)/C2=N\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?