CCCC[C@H](CC(=O)c1ccccc1)[C@@H](OC(C)=O)C(=O)Oc1c(C(C)C)cccc1C(C)C
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?