CC[C@@H](CO)NC(=O)[C@H]1C=C2c3cccc4c3c(cn4C)C[C@H]2N(C)C1.O=C(O)/C=C\C(=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?