CN(C(=O)COC(=O)c1c2c(nc3ccccc13)/C(=C/c1cccc([N+](=O)[O-])c1)CCC2)C1CCS(=O)(=O)C1
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?