CC(C)C[C@H]1CNC(=S)N1CC1CCCN1C[C@H](CC(C)C)N1C[C@H](CC(C)C)N(CC2CCCCCC2)C1=S
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?