COc1ccc2[nH]cc(CCNC(=O)c3cnn(-c4ccc(C)cc4)c3C3CCN(C(=O)OC(C)(C)C)CC3)c2c1
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?