CC(=O)O[C@H]1[C@@H](N2CCOCC2)C[C@H]2[C@@H]3CC=C4C[C@@H](N5CCCC5)CC[C@]4(C)[C@H]3CC[C@@]21C
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?