Cc1c(C(=O)O)sc2nc(SCC(=O)Nc3ccc(S(=O)(=O)NCCCC(=O)O)cc3)nc(O)c12
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?