CCOC(=O)c1[nH]c(C)c(C(=O)C2=C(O)C(=O)N(CCN3CCOCC3)C2c2cccs2)c1C
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?