CCO[C@@H]1OC(C(=O)N2CCN(Cc3ccccc3)CC2)=C[C@H](c2coc3ccccc3c2=O)[C@H]1CCCO
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?