O=C1Nc2ccccc2N=C(c2ccc3c(c2)OCO3)C1N(C(=O)c1ccnc2ccccc12)c1ccccc1
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?