Based on the SMILES O=c1ncnc2[nH][nH]cc1-2, the molecule is not permeable through the membrane separating circulating blood and extracellular brain fluid.
Based on the {SMILES__description} {#representation |!}{SMILES#}, the molecule is {p_np#not &NULL}{p_np__names__adjective}.
O=c1ncnc2[nH][nH]cc1-2
O=c1ncnc2[nH][nH]cc1-2
1,2-dihydropyrazolo[3,4-d]pyrimidin-4-one