CCCC#Cc1ccc2c(c1)O[C@H](CN(C)C(=O)CC1CC1)[C@H](C)CN([C@@H](C)CO)S2(=O)=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?