CCOC(=O)c1c(C)sc(-c2c(-c3ccc4c(c3)OCCO4)[nH]c3c2c(=O)[nH]c(=O)n3C)c1O
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?