NC(=O)C1CCN(C(=O)c2ccc3c(=O)n(Cc4ccco4)c(SCC(=O)c4ccccc4)nc3c2)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?