CCN(CC)C(=O)Cn1c(=O)n(-c2ccc(C)c(C)c2)c(=O)c2c(C)c(C(=O)N(CC)CC)sc21
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?