COC(=O)C(Cc1nc2ccccc2nc1O)/C(=N\NC(C)(C)C)C(=O)Nc1c(C)cc(Br)cc1C
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?