O=C(C1=C[C@H](c2coc3ccccc3c2=O)C[C@H](OCCCCO)O1)N1CCN(Cc2ccccc2)CC1
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?