O=C1C2Cc3c([nH]c4ccccc34)C(c3ccccc3)N2C(=O)C2Cc3c([nH]c4ccccc34)C(c3ccccc3)N12
Molecules with a polar surface area of greater than 60 angstroms squared (Å2) is hard to pass brain blood barrier. What's the psa of this molecule?