Cc1c(C(=O)O)c(O)cc2c1C(=O)c1c(O)c(O[C@H]3OC(CO)C(O)C(O)C3O)c(O)c(O)c1C2=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?