CC(C)(O)C#Cc1cccc(-c2nc(C(=O)NCCCN3CCOCC3)cc3c2[C@H](CCO)N([S+]([O-])C(C)(C)C)C3)c1
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?