Based on the SMILES O=c1nc[nH]c2c1ncn2[C@H]1CC[C@@H](CO)O1, 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=c1nc[nH]c2c1ncn2[C@H]1CC[C@@H](CO)O1
O=c1nc[nH]c2c1ncn2[C@H]1CC[C@@H](CO)O1
9-[(2R,5S)-5-(hydroxymethyl)oxolan-2-yl]-3H-purin-6-one