O=C1/C(=C\c2cccc(Cl)c2)N=C(c2ccccc2)N1n1c(-c2ccccc2)nc2ccccc2c1=O
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?