Cc1cccc(N(CC(=O)NC2CCCC2)C(=O)C[S+]([O-])CC(=O)Nc2ccc3c(c2)OCO3)c1C
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?