COc1ccc(NC(=O)N(C)C[C@H]2Oc3c(NC(=O)C4CC4)cccc3C(=O)N([C@H](C)CO)C[C@@H]2C)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?