CC(C)C(C)COC(=O)[C@@H]1C[C@@H]2c3cccc4c3c(cn4C(C)C)C[C@H]2N(C)C1.O=C(O)/C=C\C(=O)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?