Cc1cc(=O)c2c(O)cc3c(c2o1)CC=C(COC1OC(COC2OC(CO)C(O)C(O)C2O)C(O)C(O)C1O)CO3
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?