CCOC(=O)N1CC=C2C(C#N)=C(N)C(C#N)(C#N)[C@H](c3ccc(OCC)c(OCC)c3)[C@H]2C1
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?