COc1ccc(OCc2nnc(SCC(=O)c3c(N)n(C)c(=O)n(C)c3=O)n2-c2ccccc2F)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?