Cc1cccc(NC(=O)Cn2c(=O)n(Cc3ccco3)c(=N)c3c4c(sc32)COC(C)(C)C4)c1
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?