CC(=O)OCC1OC(n2c3c(c(-c4ccc(Cl)cc4)c(C#N)c2=S)CCCC3)C(OC(C)=O)C(OC(C)=O)C1OC(C)=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?