COc1ccc(C[C@H]2CN3C(=NC[C@@H]3Cc3ccccc3)N2C[C@H](C)NC(=O)CCC2CCCCC2)cc1
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?