CC(C)[C@@H]1OC(=O)/C=C\C=C/C=C\C=C/C=C\C[C@@H](O)[C@H](C)[C@@H](O)C[C@H](O)C[C@H](O)C[C@H](O)C[C@H](O)C[C@H](O)C[C@H](O)/C=C\[C@@H]1C
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?