CC(=O)NC1C(OC2OC(CC(O)C3OC([N+]4=CCC(=O)NC4=O)C(O)C3O)C(O)C(O)C2NC(=O)/C=C/CCCCCCCCC(C)C)OC(CO)C(O)C1O
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?