Cc1cc(O)c2c3c4c(cc(O)c13)C(C)(C)C(=O)c1c(O)cc(O)c(c1-4)C2=O
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?