CCN(CC)C(=O)[C@H]1C[C@H](CC(=O)NCCCOC)C(=O)N2CCc3c([nH]c4cc(-c5ccco5)ccc34)[C@]12C
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?