COC(=O)[C@@H]1C2CC3c4[nH]c5cc(OC)ccc5c4CCN3CC2C[C@H](OC(=O)c2cc(OC)c(OC)c(OC)c2)C1OC
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?