NCCCC[C@@H]1NC(=O)c2cc([N+](=O)[O-])cc(F)c2NCCCC[C@@H](C(N)=O)NC(=O)[C@H](CCC(N)=O)NC1=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?