CCN1CC2=C(NC(=S)NC2c2cc(OC)c(OC)c(OC)c2)/C(=C/c2cc(OC)c(OC)c(OC)c2)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?