COc1cccc(NC(=O)c2sc3nc(C)c(C(=O)Nc4ccc(C)cc4C)c(-c4ccccc4Cl)c3c2N)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?