The chemical with the SMILES of O=c1ncnc2[nH][nH]cc1-2 displays no permeability through the membrane separating circulating blood and extracellular brain fluid.
The {#compound|chemical!} with the {SMILES__description} of {SMILES#} {#shows|exhibits|displays!} {p_np#no &NULL}{p_np__names__noun}.
O=c1ncnc2[nH][nH]cc1-2
O=c1ncnc2[nH][nH]cc1-2
1,2-dihydropyrazolo[3,4-d]pyrimidin-4-one