CCOC(=O)[C@H]1C[C@@H](C(=O)c2ccccc2)N2N=C(c3ccc(Br)cc3)C=C[C@H]12
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?