O=C(Nc1ccc(Cl)c(C(F)(F)F)c1)c1cc2nc(-c3ccc4c(c3)OCO4)cc(C(F)(F)F)n2n1
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?