CCOC(=O)c1nnn(CC(=O)N2N=C(c3cc(C)ccc3C)CC2c2ccc(OC)cc2)c1C(=O)OCC
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?