Task: Please classify a molecule based on the description.
Description: A molecule that is permeable through the membrane separating circulating blood and extracellular brain fluid.
SMILES: Cc1cn([C@H]2C[C@H](N=[N+]=[N-])[C@@H](CO)O2)c(=O)[nH]c1=O
Constraint: Even if you are not sure, you must pick either "True" or "False" without using any other words.
Result: False
Task: Please classify a molecule based on the description.
Description: A molecule that is {p_np__names__adjective}.
{#Molecule |!}{SMILES__description}: {SMILES#}
Constraint: Even if you are {#uncertain|not sure!}, you must pick either "True" or "False" without using any {#other|extra!} words.
Result: {p_np#False&True}
1-[(2R,4S,5S)-4-azido-5-(hydroxymethyl)oxolan-2-yl]-5-methylpyrimidine-2,4-dione