CCOC(=O)C1=C(N)Oc2ccccc2C12C(=O)N(CC(=O)OC)C(CC(=O)OC)=C2C(=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?