CCC(C)N(C(=O)COC(=O)C1C(C(=O)OC)=C(C)N=C(C)/C1=C(/O)OC)C1CCS(=O)(=O)C1
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?