CC(=O)OC1CC2(O)C(CCC3(C)C(c4ccc(=O)oc4)CCC32O)C2(C)C1=CC(O)C1OC12
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?