CC(=O)NC1(C(=O)N[C@@H](Cc2ccccc2)C(=O)NC2CCCCC2)Cc2ccc3ccccc3c2-c2c(ccc3ccccc23)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?