CCCCC/C=C\C/C=C\C=C\C=C\[C@@H](SCC(NC(C)=O)C(=O)O)[C@@H](O)CCCC(=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?