C/C(CCC(=O)OC[C@@H]1O[C@H](C#Cc2ccccc2)C=C[C@@H]1Oc1ccc(C)cc1)=N/OC[C@@H](C)[C@H](OCc1ccccc1)C(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?