C#CC1(O)CCC2C3CCc4cc(Oc5nc(F)nc(-c6c7ccccc7c7sc8ccccc8n67)n5)ccc4C3CC[C@@]21C
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?