COC(=O)C1=C(C)N(Cc2ccccc2)C2=C3C(=O)OCCC3[C@@](O)(C(=O)OC)C(=O)N2C1c1ccccc1
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?