Task: Please create a molecule SMILES based on the description below.
Description: A molecule that is permeable through the membrane separating circulating blood and extracellular brain fluid.
Result: CCC(C)C(CC)C(N)=O
Task: Please {#give me|create|generate!} a {#molecule |!}{SMILES__description} based on the {#text |!}description{# below|!}.
Description: A molecule that is {p_np#not &NULL}{p_np__names__adjective}.
Result: {SMILES#}
CCC(C)C(CC)C(N)=O
CCC(C)C(CC)C(N)=O
2-ethyl-3-methylpentanamide