Based on the SMILES FCC(F)(F)F, the molecule is 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}.
FCC(F)(F)F
FCC(F)(F)F
1,1,1,2-tetrafluoroethane