Task: Please create a molecule SMILES based on the text description below.
Description: A molecule that is not permeable through the membrane separating circulating blood and extracellular brain fluid.
Result: NC(N)=NCC1COC2(CCCCC2)O1
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#}
NC(N)=NCC1COC2(CCCCC2)O1
NC(N)=NCC1COC2(CCCCC2)O1
2-(1,4-dioxaspiro[4.5]decan-3-ylmethyl)guanidine