CCOC(=O)/C=C/c1c[nH]c(=O)[nH]c1=O.CCOC(=O)/C=C/c1c[nH]c(=O)[nH]c1=O
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?