CNC[C@H]1Oc2ccc(NC(=O)Nc3ccc4c(c3)OCO4)cc2C(=O)N([C@H](C)CO)C[C@@H]1C
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?