C=CC[C@@H](CC(=O)OC(C)(C)C)C(=O)OC[C@H](Cc1c[nH]c2ccccc12)NC(=O)[C@H](CC=C)CC(=O)N[C@H](CO)Cc1ccccc1
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?