O=C(c1nc2ccc(Cl)cn2c1CNCC[C@@H]1C[C@@H]2C=C[C@H]1C2)N1CCCCCCC1
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?