C=C(C)C(=O)N1CC2(CC(c3cccc(NC(=O)/C=C\C)c3)=NO2)C[C@H]1C(N)=O
Molecules with a polar surface area of greater than 140 angstroms squared (Å2) tend to be poor at permeating cell membranes. What's the psa of this molecule?