CC(=O)OCC1OC(n2c(N)c(C#N)c(-c3ccc(C)cc3)c(C#N)c2=S)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?