CC(=O)Oc1ccc(C(=O)[C@H]2[C@H]3C(=O)N(c4cccc5ccccc45)C(=O)[C@H]3[C@@H]3C=CC=NN32)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?