CCCc1cc(O)nc(SCC(=O)c2cc(C)n(-c3c(C)n(C)n(-c4ccccc4)c3=O)c2C)n1
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?