CCC1(O)CC(OC2CC(N(C)C)C(OC3CC4OC5CC(=O)C(C)OC5OC4C(C)O3)C(C)O2)c2c(cc3c(c2O)C(=O)c2c(O)ccc(O)c2C3=O)C1C(=O)OC
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?