C/C=C(/C)C(=O)O[C@@H]1C[C@H](C)[C@@]2(C)Cc3c(C)coc3[C@H](O)[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?