Cc1cccn2c(=O)c3c(nc12)N1CCCCC1C1(C3)C(=O)N(C)C(=O)N(C)C1=O
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?