CCCC(=O)O[C@@H]1CCC2(C)C=CC([C@@H](C)C(=O)OC)=C(O2)[C@@H]2[C@]1(C)[C@@H](OC(C)=O)CC1O[C@@]12C
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?