S=C(NCCCN(Cc1ccc(Cl)cc1)c1ccc(-c2ccccc2)cn1)NCCCN(Cc1ccc(Cl)cc1)c1ccc(-c2ccccc2)cn1
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?