COC(=O)c1sc(N2C(=O)C(O)=C(C(=O)c3ccc(C)o3)C2c2ccc(OC)c(OC)c2)nc1C
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?